Implement until method on the EventFake (#19062)

When dispatching events using the `until` method instead of the
`dispatch` or `fire` methods, the given events were not being collected
in the `events` array of the `EventFake` class.

This was resulting false negatives, e.g. `assertDispatched` is failing
because the `until` method is not implemented like the `fire` and
`dispatch` methods.

* Fixes #18923

src/Illuminate/Support/Testing/Fakes/EventFake.php

@@ -192,6 +192,6 @@ public function forgetPushed()
      */
     public function until($event, $payload = [])
     {
-        //
+        return $this->dispatch($event, $payload, true);
     }
 }