optimized sealed option may not be working for 2.13

[eed3si9n]

Ref https://github.com/sbt/zinc/pull/267

steps

zincJVM2_13/testOnly sbt.inc.NameHashingCompilerSpec

    testIncrementalCompilation(
       changes = Seq(Other -> addNewSealedChildren),
       transitiveChanges = Set(Other3, Other),
       optimizedSealed = true
    )

problem

On Scala 2.13 the test fails.

expectation

Used names may not be picking this up correctly.