Added v-cloak to resolve disc button

What does this MR do?

Adds v-cloak to the Resolve discussion button to avoid handlebar syntax displaying before the component compiles.

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if you do - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #22640 (closed)

Added ~149423 label

Milestone changed to %8.12

Thanks @lbennett for the quick turnaround. You rock.

Enabled an automatic merge when the build for 51c04a2f succeeds

Mentioned in issue #22011 (closed)

Status changed to merged

Mentioned in commit 045836c4

Mentioned in issue #22556 (closed)

Picked into 8-12-stable, will go into 8.12.2.

Removed ~149423 label

@rdavila This shouldn't be picked into stable as it caused master to fail. @jschatz1 am I right in thinking this?

@lbennett Right, should we pick your fix into 8-12-stable?

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6553 fixes this

So we can pick both right @stanhu?

@jschatz1 I think so.

@rdavila Can you pick !6553 (merged) and this into stable? It's already marked so I prob don't need to say anything.

@jschatz1 yeah, I've already picked it :)

Mentioned in commit 7b7b1fac