Enable store_ci_pipeline_counts_by_status FF

This change enables the store_ci_pipeline_counts_by_status feature flag
by default.

app/models/analytics/instance_statistics/measurement.rb

@@ -38,7 +38,7 @@ module Analytics
       scope :with_identifier, -> (identifier) { where(identifier: identifier) }
 
       def self.measurement_identifier_values
-        if Feature.enabled?(:store_ci_pipeline_counts_by_status)
+        if Feature.enabled?(:store_ci_pipeline_counts_by_status, default_enabled: true)
           identifiers.values
         else
           identifiers.values - EXPERIMENTAL_IDENTIFIERS.map { |identifier| identifiers[identifier] }

changelogs/unreleased/254721-enable-store_ci_pipeline_counts_by_status-ff-by-default.yml

+---
+title: Store pipeline counts by status for instance statistics
+merge_request: 43857
+author:
+type: added

config/feature_flags/development/store_ci_pipeline_counts_by_status.yml

@@ -4,4 +4,4 @@ introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/43027
 rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/254721
 type: development
 group: group::analytics
-default_enabled: false
+default_enabled: true