[27] Create Java 27 test framework changes

[mpalat]

Relevant changes to be updated in master and then merged to BETA_JAVA27

[jarthana]

I will keep this open as I investigate a bunch of unexpected API analysis warnings.

[mpalat]

@jarthana - can this be closed now?

[stephan-herrmann]

Why does this issue have milestone 4.40 M1?