Reactivate some tests on JDK 21 after upstream fix

https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466 has finally
been fixed.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

tests/features1921/java21/SwitchPatternPreview3Aspect.aj

   }
 
   Object around(Integer i): execution(* doSomethingWithInteger(*)) && args(i) {
-    // This used to work in preview 4 (Java 20), but fails during runtime with
-    //   java.lang.IndexOutOfBoundsException: Index 4 out of bounds for length 4
-    // in ECJ 3.36.0-SNAPSHOT with Java 21.
-    // See:
-    //   https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466.
-    //
-    // TODO: Activate when https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466 is fixed.
-    /*
     System.out.println(
       switch (i) {
         case null -> "value unavailable: " + i;
         default -> "other integer: " + i;
       }
     );
-    */
     return proceed(i);
   }
 }

tests/features1921/java21/SwitchPatternPreview4OK.java

 //    constantLabelMustAppearBeforePattern(Integer.valueOf(123));
 //    constantLabelMustAppearBeforePattern(null);
 
-    // TODO: Activate when https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466 is fixed.
-    /*
     constantLabelMustAppearBeforePatternInteger(-1);
     constantLabelMustAppearBeforePatternInteger(0);
     constantLabelMustAppearBeforePatternInteger(42);
     constantLabelMustAppearBeforePatternInteger(-99);
     constantLabelMustAppearBeforePatternInteger(Integer.valueOf(123));
     constantLabelMustAppearBeforePatternInteger(null);
-    */
 
     System.out.println(testGenericSealedExhaustive(new E<Integer>()));
   }
   }
 */
 
-  /**
-   * This used to work in preview 4 (Java 20), but fails during runtime with
-   *   java.lang.IndexOutOfBoundsException: Index 4 out of bounds for length 4
-   * in ECJ 3.36.0-SNAPSHOT with Java 21.
-   * See:
-   *   https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466.
-   *
-   * TODO: Activate when https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466 is fixed.
-   */
   static String constantLabelMustAppearBeforePatternInteger(Integer i) {
     switch (i) {
       case null -> System.out.println("value unavailable: " + i);

tests/src/test/resources/org/aspectj/systemtest/ajc1921/ajc1921.xml

 	<ajc-test dir="features1921/java21" vm="21" title="switch pattern matching preview 4 java">
 		<compile files="SwitchPatternPreview4OK.java" options="-21" />
 		<run class="SwitchPatternPreview4OK" vmargs="">
-			<message></message>
+			<message/>
 			<stdout>
 				<line text="null" />
 				<line text="int 123" />
 				<line text="Sealed sub-class A" />
 				<line text="Sealed sub-class B" />
 				<line text="Sealed sub-record C" />
-				<!-- TODO: Activate when https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466 is fixed. -->
-				<!--
 				<line text="absolute value 1: -1" />
 				<line text="other integer: 0" />
 				<line text="positive integer: 42" />
 				<line text="other integer: -99" />
 				<line text="positive integer: 123" />
 				<line text="value unavailable: null" />
-				-->
 				<line text="42" />
 			</stdout>
 		</run>
 				<line text="Sealed sub-class A" />
 				<line text="Sealed sub-class B" />
 				<line text="Sealed sub-record C" />
-				<!-- TODO: Activate when https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1466 is fixed. -->
-				<!--
 				<line text="absolute value 1: -1" />
 				<line text="other integer: 0" />
 				<line text="positive integer: 42" />
 				<line text="other integer: -99" />
 				<line text="positive integer: 123" />
 				<line text="value unavailable: null" />
-				-->
 			</stdout>
 		</run>
 	</ajc-test>