Watcher: Reenable HttpSecretsIntegrationTests#testWebhookAction test

The error message mentioned in elastic#30094 does not link to to a cause by the
test itself, as there are still inflight requests according to the
circuit breaker.

I ran this test class 100k times on bare metal and could not reproduce
it. I will reenable the test for now.

Closes elastic#30094

x-pack/plugin/watcher/src/test/java/org/elasticsearch/xpack/watcher/test/integration/HttpSecretsIntegrationTests.java

@@ -165,7 +165,6 @@ public void testHttpInput() throws Exception {
             is(ApplicableBasicAuth.headerValue(USERNAME, PASSWORD.toCharArray())));
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/30094")
     public void testWebhookAction() throws Exception {
         WatcherClient watcherClient = watcherClient();
         watcherClient.preparePutWatch("_id")