chore(replay): Feature flag for replay web vitals (#72951)

To be used in #72949

Author: c298lee

src/sentry/features/temporary.py

@@ -378,6 +378,8 @@ def register_temporary_features(manager: FeatureManager):
     manager.add("organizations:session-replay-slack-new-issue", OrganizationFeature, FeatureHandlerStrategy.INTERNAL)
     # Enable core Session Replay link in the sidebar
     manager.add("organizations:session-replay-ui", OrganizationFeature, FeatureHandlerStrategy.INTERNAL, default=True)
+    # Enable replay web vital breadcrumbs
+    manager.add("organizations:session-replay-web-vitals", OrganizationFeature, FeatureHandlerStrategy.FLAGPOLE, default=False)
     # Lets organizations manage grouping configs
     manager.add("organizations:set-grouping-config", OrganizationFeature, FeatureHandlerStrategy.INTERNAL)
     # Enable the UI for updated terms of service