test(throttling): Explicitly enable throttling to make test more stable

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2670>

api/tests/common/test_throttling.py

@@ -269,6 +269,7 @@ def test_throttle_calls_attach_info(method, mocker):
 
 
 def test_allow_request(api_request, settings, mocker):
+    settings.THROTTLING_ENABLED = True
     settings.THROTTLING_RATES = {"test": {"rate": "2/s"}}
     ip = "92.92.92.92"
     request = api_request.get("/", HTTP_X_FORWARDED_FOR=ip)