SearchEverywhere may be invoked in dumb mode and cause INRE

[hurricup]

https://camelcade.myjetbrains.com/youtrack/issue/CAMELCADE-19947

com.intellij.openapi.project.IndexNotReadyException: Please change caller according to com.intellij.openapi.project.IndexNotReadyException documentation. Dumb mode start trace is in the cause.
	at com.intellij.openapi.project.IndexNotReadyException.create(IndexNotReadyException.java:68)
	at com.intellij.util.indexing.FileBasedIndexImpl.handleDumbMode(FileBasedIndexImpl.java:879)
	at com.intellij.util.indexing.FileBasedIndexImpl.ensureUpToDate(FileBasedIndexImpl.java:827)
	at com.intellij.util.indexing.FileBasedIndexEx.ensureUpToDate(FileBasedIndexEx.java:486)
	at com.intellij.psi.stubs.StubIndexEx.processElements(StubIndexEx.java:162)
	at com.intellij.psi.stubs.StubIndex.processElements(StubIndex.java:58)
	at com.perl5.lang.perl.psi.stubs.PerlStubIndexBase.processElements(PerlStubIndexBase.java:61)
	at com.perl5.lang.perl.psi.PerlNamespaceDefinitionElement.processExportDescriptors(PerlNamespaceDefinitionElement.java:110)
	at com.perl5.lang.perl.psi.PerlNamespaceDefinitionElement.processExportDescriptors(PerlNamespaceDefinitionElement.java:53)
	at com.perl5.lang.perl.psi.PerlNamespaceDefinitionElement.collectImportDescriptors(PerlNamespaceDefinitionElement.java:58)
	at com.perl5.lang.perl.psi.PerlNamespaceDefinitionElement.getImportedScalarDescriptors(PerlNamespaceDefinitionElement.java:67)
	at com.perl5.lang.perl.idea.structureView.elements.PerlStructureViewElement.getChildrenBase(PerlStructureViewElement.java:193)
	at com.intellij.ide.structureView.impl.common.PsiTreeElementBase.doGetChildren(PsiTreeElementBase.java:84)
	at com.intellij.ide.structureView.impl.common.PsiTreeElementBase.getChildren(PsiTreeElementBase.java:74)
	at com.intellij.ide.structureView.impl.common.PsiTreeElementBase.getChildren(PsiTreeElementBase.java:23)
	at com.intellij.ide.actions.searcheverywhere.SearchEverywhereUI$13.findFirstChild(SearchEverywhereUI.java:1109)
	at com.intellij.ide.actions.searcheverywhere.SearchEverywhereUI$13.lambda$run$0(SearchEverywhereUI.java:1055)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runReadAction(AnyThreadWriteThreadingSupport.kt:264)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runReadAction(AnyThreadWriteThreadingSupport.kt:221)
	at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:857)
	at com.intellij.openapi.application.ReadAction.compute(ReadAction.java:66)
	at com.intellij.ide.actions.searcheverywhere.SearchEverywhereUI$13.run(SearchEverywhereUI.java:1054)
	at com.intellij.openapi.progress.impl.CoreProgressManager.startTask(CoreProgressManager.java:477)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.startTask(ProgressManagerImpl.java:133)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcessWithProgressAsynchronously$6(CoreProgressManager.java:528)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$4(ProgressRunner.java:249)
	at com.intellij.openapi.progress.ProgressManager.lambda$runProcess$0(ProgressManager.java:96)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:221)
	at com.intellij.platform.diagnostic.telemetry.helpers.TraceKt.use(trace.kt:49)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:220)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$13(CoreProgressManager.java:660)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:735)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:691)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:659)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:79)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:202)
	at com.intellij.openapi.progress.ProgressManager.runProcess(ProgressManager.java:96)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$5(ProgressRunner.java:249)
	at com.intellij.openapi.progress.impl.ProgressRunner$ProgressRunnable.run(ProgressRunner.java:501)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$launchTask$18(ProgressRunner.java:466)
	at com.intellij.util.concurrency.ChildContext$runAsCoroutine$1.invoke(propagation.kt:92)
	at com.intellij.util.concurrency.ChildContext$runAsCoroutine$1.invoke(propagation.kt:92)
	at com.intellij.util.concurrency.ChildContext.runAsCoroutine(propagation.kt:97)
	at com.intellij.util.concurrency.ChildContext.runAsCoroutine(propagation.kt:92)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$launchTask$19(ProgressRunner.java:464)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:735)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:732)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:732)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.Throwable
	at com.intellij.openapi.project.DumbServiceImpl.queueTask(DumbServiceImpl.kt:368)
	at com.intellij.openapi.project.DumbModeTask.queue(DumbModeTask.java:66)
	at com.intellij.util.indexing.DumbModeWhileScanningTrigger$subscribe$1.invokeSuspend(DumbModeWhileScanningTrigger.kt:59)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:102)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:608)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:873)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:763)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:750)