Document test-method scoped TestContext semantics #35716
Description
Overview
Although #35680 introduced support for JUnit Jupiter's TEST_METHOD ExtensionContextScope in the SpringExtension and BeanOverrideTestExecutionListener, those were internal changes that are not directly visible by TestExecutionListener authors.
However, in order to be compatible with a test-method scoped TestContext (which takes its values from the current Jupiter ExtensionContext), existing third-party TestExecutionListener implementations may need to be modified similar to how BeanOverrideTestExecutionListener was modified in commit d24a31d.
To raise awareness, we should document test-method TestContext semantics for TestExecutionListener authors in Spring Framework 6.2.x.