fix(i18n): convert remaining Experimental to Nightly

[scarf005]

Checklist

Required

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax so it can be closed automatically.
• I have committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

Purpose of change

• fixes Translation templates aren't pushed to transifex #5462

Describe the solution

please check individual commits.

Additional context

followup of #5400