[TD] Mute some javac tests or update their testdata

There was a refactoring of AbstractDiagnosticsTest in 9052ef06 which
  contains bug that `setupEnvironment` for AbstractDiagnosticsTestUsingJavac
  was not called, so for last year tests `UsingJavac` had no difference
  with usual diagnostics tests which causes some contradictions in test data

compiler/testData/diagnostics/tests/valueClasses/basicValueClassDeclarationDisabled.fir.kt

@@ -1,3 +1,4 @@
+// !SKIP_JAVAC
 // !LANGUAGE: -InlineClasses
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
@@ -12,4 +13,4 @@ value object InlineObject
 value enum class InlineEnum
 
 @JvmInline
-value class NotVal(x: Int)
+value class NotVal(x: Int)