bug: breakpoints in in an anonymous class method executed on a virtual thread callstack are skipped

[Ben Berman]

Investigating an issue in both IntelliJ and Eclipse debuggers led to this
bug: I can't break inside an anonymous class method of the form

```
new Object() {
  void test() {
    System.out.println("breakpoint here does not work");
  }
}.test();
```

due to a buggy interaction between JDWP and virtual threads. The console
statement in the example above does indeed print, i.e. it is executed.

What would the next steps be to help with investigating and resolving this
issue?

https://youtrack.jetbrains.com/issue/IDEA-324002/IntelliJ-debugger-doesnt-break-nor-does-Eclipse-in-a-virtual-threads-project-inside-anonymous-class-methods-reproduction?clearDraft=true&description=%0A%0AIU-231.9161.38,%20JRE%2017.0.7%2B10-b829.16x64%20JetBrains%20s.r.o
.,%20OS%20Mac%20OS%20X(aarch64)%20v13.4,%20screens%203456.0x2234.0;%20Retina
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