Use v-cloak on button text

We use vue for this button. On long rendering things you will see a flash of the mustache templates. Please add v-cloak to this so we don't see it.

Mentioned in issue #22011 (closed)

Reassigned to @lbennett

Started branch 22640-use-v-cloak-on-button-text

Mentioned in merge request !6528 (merged)

Status changed to closed by merge request !6528 (merged)

Mentioned in commit 7b7b1fac

mentioned in merge request !14785