When a parent rate amount was updated via PUT /rates/{id}/amounts, the resulting child rate amount changes were incorrectly recorded with the action type edit_rate rather than edit_rate_manager. This caused the edit_rate webhook to fire unnecessarily for every child rate update, resulting in excessive webhook traffic and increased API callback volume.

Child rate amount changes triggered by a parent rate update via PUT /rates/{id}/amounts are now correctly recorded with the action type edit_rate_manager, and no longer trigger the edit_rate webhook.