feat(anr-improvements): Introduce anr improvement flag (#46035)

ANR improvement flag

src/sentry/conf/server.py

@@ -1317,6 +1317,8 @@ SENTRY_FEATURES = {
     "organizations:ds-prioritise-by-transaction-bias": False,
     # Enable view hierarchies options
     "organizations:view-hierarchies-options-dev": False,
+    # Enable anr improvements ui
+    "organizations:anr-improvements": False,
     # Enable device.class as a selectable column
     "organizations:device-classification": False,
     # Enable the onboarding heartbeat footer on the sdk setup page

src/sentry/features/__init__.py

@@ -104,6 +104,7 @@ default_manager.add("organizations:metrics-extraction", OrganizationFeature, Fea
 default_manager.add("organizations:minute-resolution-sessions", OrganizationFeature, FeatureHandlerStrategy.INTERNAL)
 default_manager.add("organizations:mobile-vitals", OrganizationFeature, FeatureHandlerStrategy.REMOTE)
 default_manager.add("organizations:view-hierarchies-options-dev", OrganizationFeature, FeatureHandlerStrategy.REMOTE)
+default_manager.add("organizations:anr-improvements", OrganizationFeature, FeatureHandlerStrategy.REMOTE)
 default_manager.add("organizations:anr-rate", OrganizationFeature, FeatureHandlerStrategy.REMOTE)
 default_manager.add("organizations:device-classification", OrganizationFeature, FeatureHandlerStrategy.REMOTE)
 default_manager.add("organizations:monitors", OrganizationFeature, FeatureHandlerStrategy.REMOTE)