Commit 9dd7f5412a (which has now been
reverted) addressed the issue of having the TestNG TestEngine for the
JUnit Platform on the test runtime classpath by allowing `org.testng`
types to pass through to the original ClassLoader; however, that fix
merely obfuscated the underlying issue.
The underlying issue is that the CompileWithTargetClassAccessExtension
is only applicable to JUnit Jupiter tests and therefore should launch
the JUnit Platform with only the JUnit Jupiter TestEngine active.
This commit addresses this issue by applying an EngineFilter to include
only the "junit-jupiter" test engine.
Closes gh-28900
4896b115d2