chore(dashboards): Add feature flag for equations in dashboards (#95288)

Author: Zylphrex

src/sentry/features/temporary.py

@@ -477,6 +477,8 @@ def register_temporary_features(manager: FeatureManager):
     manager.add("organizations:visibility-explore-aggregate-editor", OrganizationFeature, FeatureHandlerStrategy.FLAGPOLE, api_expose=True)
     # Enable equations feature on the new explore page
     manager.add("organizations:visibility-explore-equations", OrganizationFeature, FeatureHandlerStrategy.FLAGPOLE, api_expose=True)
+    # Enable equations feature in dashboards
+    manager.add("organizations:visibility-dashboards-equations", OrganizationFeature, FeatureHandlerStrategy.FLAGPOLE, api_expose=True)
     # Enable the new explore page
     manager.add("organizations:visibility-explore-view", OrganizationFeature, FeatureHandlerStrategy.FLAGPOLE, api_expose=True)
     # Enable high date range options on new explore page