8353953: con/sun/jdi tests should be fixed to not always require includevirtualthreads=y

[plummercj]

Don't use includevirtualthreads=y unless the test requires it. Debuggers don't usually use includevirtualthreads=y, so we should be doing most of our testing without it. The only reason tests use it is because some tests need it so they can find virtual threads in the debuggee by using vm.allThreads(). This change limits the use of includevirtualthreads=y to just those com/sun/jdi tests that need it.

Tested by running com/sun/jdi tests on all supported platforms in both platform threads mode and virtual threads mode. Also tested with tier1 CI.

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Issue

• JDK-8353953: con/sun/jdi tests should be fixed to not always require includevirtualthreads=y (Enhancement - P3)

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[mlbridge]

Webrevs

• 02: Full - Incremental (8193ccb5)
• 01: Full - Incremental (69ce42c3)
• 00: Full (bcb0d8fa)

[sspitsyn]

This looks okay. Are you going to tweak more tests with this flag?

[plummercj]

This looks okay. Are you going to tweak more tests with this flag?

No. Only the one test needs includevirtualthreads=y.