IOAppSuite failure on JDK 25

as seen in the Scala 2.13 community build at https://scala-ci.typesafe.com/job/scala-2.13.x-jdk25-integrate-community-build/9/artifact/logs/cats-effect-build.log :

[cats-effect] [error] ==> X cats.effect.IOAppSuite.support main thread evaluation  0.422s munit.ComparisonFailException: ioapp-tests/src/test/scala/IOAppSuite.scala:361
[cats-effect] [error] 360:        val h = platform("EvalOnMainThread", List.empty)
[cats-effect] [error] 361:        assertEquals(h.awaitStatus(), 0)
[cats-effect] [error] 362:      }
[cats-effect] [error] values are not the same
[cats-effect] [error] => Obtained
[cats-effect] [error] 1
[cats-effect] [error] => Diff (- expected, + obtained)
[cats-effect] [error] -0
[cats-effect] [error] +1
[cats-effect] [error]     at munit.FunSuite.assertEquals(FunSuite.scala:13)
[cats-effect] [error]     at cats.effect.IOAppSuite.$anonfun$new$91(IOAppSuite.scala:361)

I assume it's easily reproducible, but if not, lmk

Start by reproducing the Scala 2.13 community-build failure on JDK 25 and read ioapp-tests/src/test/scala/IOAppSuite.scala around line 361. Investigate why the EvalOnMainThread case reports status 1 instead of 0; done means the test passes on the affected JDK version.