lsttokens tests: report empty-override suppressions as skipped, not absent

[Vest]

Summary

Concrete lst-token test classes overrode inherited @Test methods with an empty body plus a code comment to mean "this scenario doesn't apply here" — for example:

@Override
public void testOverwrite()
{
    // Can't be done, nothing ever unparses
}

The intent was to suppress the parent's test. What actually happens under JUnit 5 is subtly worse than expected: Jupiter drops the parent's @Test when the subclass overrides it without re-declaring @Test (docs: "Such methods are inherited unless overridden."). So the previous state was neither a passing test nor a reported skip — the test was simply absent from the report. A reader of the subclass could not tell whether the parent's test was still running or being suppressed.

Fix

Re-declare @Test on the override alongside @Disabled("<reason>"). The reason string moves out of an invisible code comment into JUnit test metadata, and each suppressed test is now reported as skipped with its rationale instead of silently dropped.

Methods touched (11 total)

File	Method(s)	Reason
AddTokenTest	testOverwrite	"Can't be done, nothing ever unparses"
PreTokenTest	testOverwrite	"Can't be done, nothing ever unparses"
SchoolsTokenTest	testInvalidInputOnlySubToken, testInvalidInputOnlySubTokenPipe	"Must ignore due to 5.16 syntax"
SchoolsTokenTest	testUnparseIllegalAllItem, …AllType, …ItemAll, …TypeAll, …Legal	"SpellSchool doesn't have a RM"
ItypeTokenTest	testReplacementInputs, testReplacementInputsTwo	"514 behavior, to be changed after 5.16?"

ItypeTokenTest.testReplacementInputsTwo was carrying the same anti-pattern without any comment at all — folded in here because the fix is identical.

Verification

./gradlew :test --tests "plugin.lsttokens.*" (aggregated across all suites in the package tree):

	Before	After
tests	2399	2410
skipped	0	11
failures	0	0
errors	0	0

The 11 newly-reported skips exactly match the 11 methods annotated above — no other tests were affected.

Diff stats

 4 files changed, 26 insertions(+), 10 deletions(-)

Pure test-metadata cleanup. No production code changed.