Fix merge unverified changes modal showing incorrectly
What does this MR do and why?
Fixes the merge unverified changes modal showing incorrectly when a merge request does not have a pipeline attached to it.
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How to set up and validate locally
Numbered steps to set up and validate the change are strongly suggested.
Relates to https://gitlab.com/gitlab-org/release/tasks/-/issues/12432
Edited by André Luís