Fix merge request actions dropdown on the commit or pipelines tab when the `moved_mr_sidebar` FF is enabled
The Lock merge request
part of the MR actions dropdown is rendered incorrectly on the commits and pipelines tab. The issue occurs only when the moved_mr_sidebar
FF is enabled and the user lands on one of these tabs.
It might be related to the changes in Lazy init for MR pages (!106330 - merged). It seems like these tabs are loaded with the default store and the [isMergeRequest](https://gitlab.com/gitlab-org/gitlab/-/blob/076e6fcd0c757dbbe17dc63f4b680451cf405637/app/assets/javascripts/sidebar/components/lock/issuable_lock_form.vue#L48)
computed property doesn’t get the correct value.
Here is the screenshot: