feat(feature-flag): Add new feature flag to control the removal of multiselect platforms in the onboarding (#43871)

Author: priscilawebdev

src/sentry/conf/server.py

@@ -1218,6 +1218,8 @@ def SOCIAL_AUTH_DEFAULT_USERNAME():
     "organizations:mobile-view-hierarchies": False,
     # Enable the onboarding heartbeat footer on the sdk setup page
     "organizations:onboarding-heartbeat-footer": False,
+    # Disables multiselect platform in the onboarding flow
+    "organizations:onboarding-remove-multiselect-platform": False,
     # Enable ANR rates in project details page
     "organizations:anr-rate": False,
     # Enable tag improvements in the issue details page

src/sentry/features/__init__.py

@@ -203,6 +203,7 @@
 default_manager.add("organizations:integrations-stacktrace-link", OrganizationFeature)
 default_manager.add("organizations:integrations-ticket-rules", OrganizationFeature)
 default_manager.add("organizations:onboarding-heartbeat-footer", OrganizationFeature, True)
+default_manager.add("organizations:onboarding-remove-multiselect-platform", OrganizationFeature, True)
 default_manager.add("organizations:performance-view", OrganizationFeature)
 default_manager.add("organizations:profile-blocked-main-thread-ingest", OrganizationFeature)
 default_manager.add("organizations:relay", OrganizationFeature)