Problem:
Apparently, there are usernames that contain apostrophes. The apostrophe gets escaped when used in an edit summary (right-hand side).

List of steps to reproduce (step by step, including full links if applicable):

• revert an edit of a user with an apostrophe in their user name
• view the diff of the revert

What happens?:

• user name is shown wrong in the edit summary that was automatically generated for the revert
• user name is not linked correctly in the edit summary that was automatically generated for the revert

What should have happened instead?:

• user name is shown and linked without encoding issue

Browser information, screenshots/mockups, other information, etc. (if applicable):
Screenshot from an example diff with broken encoding in the summary:

Acceptance criteria (optional):

• apostrophes in user names are handled without encoding issues when reverting an edit of a user with an apostrophe in their user name

Notes:

• We know this is stemming from wikibase, as the message key used for the edit summary is wikibase-entity-summary-restore from Wikibase repo