Enable Loose Foreign Keys partition rotation

This change enables the daily partition dropping and partition creation
for the loose foreign keys feature.

Changelog: added

config/feature_flags/development/lfk_automatic_partition_creation.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/346907
 milestone: '14.6'
 type: development
 group: group::sharding
-default_enabled: false
+default_enabled: true

config/feature_flags/development/lfk_automatic_partition_dropping.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/346908
 milestone: '14.6'
 type: development
 group: group::sharding
-default_enabled: false
+default_enabled: true