Fix `license_compliance_denies_mr` feature flag

It appears that this feature flag should be
`default_enabled: true`

ee/app/controllers/projects/licenses_controller.rb

@@ -5,7 +5,7 @@ module Projects
     before_action :authorize_read_licenses!, only: [:index]
     before_action :authorize_admin_software_license_policy!, only: [:create, :update]
     before_action do
-      push_frontend_feature_flag(:license_compliance_denies_mr, default_enabled: false)
+      push_frontend_feature_flag(:license_compliance_denies_mr, default_enabled: true)
     end
 
     def index

ee/config/feature_flags/development/license_compliance_denies_mr.yml

+---
+name: license_compliance_denies_mr
+introduced_by_url: 
+rollout_issue_url: 
+group: 
+type: development
+default_enabled: true