RemotingSpec: must be able to connect to system even if it's not there at first: address already in use

[raboof]

https://github.com/apache/pekko/actions/runs/12632585611/job/35196562037

Possibly related to #1679

org.apache.pekko.remote.RemoteTransportException: Startup failed
	at org.apache.pekko.remote.Remoting.org$apache$pekko$remote$Remoting$$notifyError(Remoting.scala:174)
	at org.apache.pekko.remote.Remoting.start(Remoting.scala:250)
	at org.apache.pekko.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:274)
	at org.apache.pekko.actor.ActorSystemImpl._start$lzyINIT1(ActorSystem.scala:1043)
	at org.apache.pekko.actor.ActorSystemImpl._start(ActorSystem.scala:1039)
	at org.apache.pekko.actor.ActorSystemImpl.start(ActorSystem.scala:1062)
	at org.apache.pekko.actor.ActorSystem$.apply(ActorSystem.scala:283)
	at org.apache.pekko.actor.ActorSystem$.apply(ActorSystem.scala:327)
	at org.apache.pekko.actor.ActorSystem$.apply(ActorSystem.scala:301)
	at org.apache.pekko.remote.classic.RemotingSpec.selectionAndBind$1(RemotingSpec.scala:790)
	at org.apache.pekko.remote.classic.RemotingSpec.f$proxy20$1(RemotingSpec.scala:809)
	at org.apache.pekko.remote.classic.RemotingSpec.$init$$$anonfun$3$$anonfun$20(RemotingSpec.scala:799)
	at org.scalatest.Transformer.apply$$anonfun$1(Transformer.scala:22)
	at org.scalatest.OutcomeOf.outcomeOf(OutcomeOf.scala:85)
	at org.scalatest.OutcomeOf.outcomeOf$(OutcomeOf.scala:31)
	at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
	at org.scalatest.Transformer.apply(Transformer.scala:22)
	at org.scalatest.Transformer.apply(Transformer.scala:21)
	at org.scalatest.wordspec.AnyWordSpecLike$$anon$3.apply(AnyWordSpecLike.scala:1118)
	at org.scalatest.TestSuite.withFixture(TestSuite.scala:196)
	at org.scalatest.TestSuite.withFixture$(TestSuite.scala:138)
	at org.apache.pekko.testkit.PekkoSpec.withFixture(PekkoSpec.scala:80)
	at org.scalatest.wordspec.AnyWordSpecLike.invokeWithFixture$1(AnyWordSpecLike.scala:1124)
	at org.scalatest.wordspec.AnyWordSpecLike.runTest$$anonfun$1(AnyWordSpecLike.scala:1128)
	at org.scalatest.SuperEngine.runTestImpl(Engine.scala:306)
	at org.scalatest.wordspec.AnyWordSpecLike.runTest(AnyWordSpecLike.scala:1128)
	at org.scalatest.wordspec.AnyWordSpecLike.runTest$(AnyWordSpecLike.scala:44)
	at org.apache.pekko.testkit.PekkoSpec.runTest(PekkoSpec.scala:80)
	at org.scalatest.wordspec.AnyWordSpecLike.runTests$$anonfun$1(AnyWordSpecLike.scala:1187)
	at org.scalatest.SuperEngine.traverseSubNodes$1$$anonfun$1(Engine.scala:413)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:334)
	at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:429)
	at org.scalatest.SuperEngine.runTestsInBranch(Engine.scala:390)
	at org.scalatest.SuperEngine.traverseSubNodes$1$$anonfun$1(Engine.scala:427)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:334)
	at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:429)
	at org.scalatest.SuperEngine.runTestsInBranch(Engine.scala:396)
	at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:475)
	at org.scalatest.wordspec.AnyWordSpecLike.runTests(AnyWordSpecLike.scala:1187)
	at org.scalatest.wordspec.AnyWordSpecLike.runTests$(AnyWordSpecLike.scala:44)
	at org.apache.pekko.testkit.PekkoSpec.runTests(PekkoSpec.scala:80)
	at org.scalatest.Suite.run(Suite.scala:1114)
	at org.scalatest.Suite.run$(Suite.scala:564)
	at org.apache.pekko.testkit.PekkoSpec.org$scalatest$wordspec$AnyWordSpecLike$$super$run(PekkoSpec.scala:80)
	at org.scalatest.wordspec.AnyWordSpecLike.run$$anonfun$1(AnyWordSpecLike.scala:1232)
	at org.scalatest.SuperEngine.runImpl(Engine.scala:535)
	at org.scalatest.wordspec.AnyWordSpecLike.run(AnyWordSpecLike.scala:1232)
	at org.scalatest.wordspec.AnyWordSpecLike.run$(AnyWordSpecLike.scala:44)
	at org.apache.pekko.testkit.PekkoSpec.org$scalatest$BeforeAndAfterAll$$super$run(PekkoSpec.scala:80)
	at org.scalatest.BeforeAndAfterAll.liftedTree1$1(BeforeAndAfterAll.scala:213)
	at org.scalatest.BeforeAndAfterAll.run(BeforeAndAfterAll.scala:217)
	at org.scalatest.BeforeAndAfterAll.run$(BeforeAndAfterAll.scala:135)
	at org.apache.pekko.testkit.PekkoSpec.run(PekkoSpec.scala:80)
	at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:321)
	at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:517)
	at sbt.ForkMain$Run.lambda$runTest$1(ForkMain.java:414)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.net.BindException: Address already in use
	at java.base/sun.nio.ch.Net.bind0(Native Method)
	at java.base/sun.nio.ch.Net.bind(Net.java:459)
	at java.base/sun.nio.ch.Net.bind(Net.java:448)
	at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:227)
	at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:141)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:561)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1281)
	at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:600)
	at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:579)
	at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:922)
	at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:259)
	at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:380)
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	... 1 more
]