[Java] Clear interrupted status on the worker thread before starting …

…next test to prevent the domino effect.

aeron-test-support/src/main/java/io/aeron/test/SystemTestWatcher.java

@@ -164,6 +164,7 @@ public void showAllErrors()
 
     public void beforeEach(final ExtensionContext context)
     {
+        Thread.interrupted(); // clean the interrupted flag so that it does not affect the next test
         startTimeNs = System.nanoTime();
     }