Enable reassignment throttling feature

This sets the default for :reassignment_throttling
to true.

Changelog: other

config/feature_flags/gitlab_com_derisk/reassignment_throttling.yml → config/feature_flags/beta/reassignment_throttling.yml

@@ -5,5 +5,5 @@ introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/173292
 rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/504995
 milestone: '17.7'
 group: group::import and integrate
-type: gitlab_com_derisk
-default_enabled: false
+type: beta
+default_enabled: true