Merge branch 'activerecord_empty_query_default_true' into 'master'

Use empty-query by default to check database connection

See merge request gitlab-org/gitlab!54366

changelogs/unreleased/activerecord_empty_query_default_true.yml

+---
+title: Use empty-query by default to check database connection
+merge_request: 54366
+author: Leandro Gomes @leandrogs
+type: performance

config/initializers/active_record_ping.rb

@@ -2,6 +2,6 @@
 
 # # frozen_string_literal: true
 
-if Gitlab::Utils.to_boolean(ENV['ENABLE_ACTIVERECORD_EMPTY_PING'], default: false)
+if Gitlab::Utils.to_boolean(ENV['ENABLE_ACTIVERECORD_EMPTY_PING'], default: true)
   ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.prepend(Gitlab::Database::PostgresqlAdapter::EmptyQueryPing)
 end