add @internal tag on markSkippedForErrorInPreviousRepetition

Author: nikophil

src/Framework/RepeatTestSuite.php

@@ -20,7 +20,7 @@
  *
  * @internal This class is not covered by the backward compatibility promise for PHPUnit
  */
-final class RepeatTestSuite implements Reorderable, Test
+final readonly class RepeatTestSuite implements Reorderable, Test
 {
     /**
      * @var non-empty-list<PhptTestCase>|non-empty-list<TestCase>

src/Framework/TestCase.php

@@ -965,7 +965,10 @@ final public function wasPrepared(): bool
         return $this->wasPrepared;
     }
 
-    public function markSkippedForErrorInPreviousRepetition(): void
+    /**
+     * @internal This method is not covered by the backward compatibility promise for PHPUnit
+     */
+        public function markSkippedForErrorInPreviousRepetition(): void
     {
         $message = 'Test repetition failure';