Fix testWatchdogLogging

It's possible that the expected thread isn't the only thread that made
no progress since the last check, so this commit generalizes the
assertion to allow for other threads to be mentioned here too.

Closes elastic#113734

test/framework/src/main/java/org/elasticsearch/transport/AbstractSimpleTransportTestCase.java

@@ -3369,7 +3369,7 @@ public void testWatchdogLogging() {
                 "stuck threads logging",
                 ThreadWatchdog.class.getCanonicalName(),
                 Level.WARN,
-                "the following threads are active but did not make progress in the preceding [5s]: [" + threadName + "]"
+                "the following threads are active but did not make progress in the preceding [5s]: [*" + threadName + "*]"
             )
         );
         safeAwait(barrier);