[4.0] On updating Joomla, "Overridden files have changed" message should be linked to allow resolution.

[particthistle]

Steps to reproduce the issue

• Potentially update Joomla 4 back to Beta 7
• Update to Beta 8 (nightly build 17th April 2021 or later)
• You'll see a message re overridden files.

Expected result

Message could link through to the Overrides issue list (same place as Notifications module button for "Override(s) to check!" takes you)

Actual result

Message is not linked. Administrator may not spend a moment checking the overrides.

Additional comments

Separate to this issue, the Overrides to Check function needs addressing. Clicking on the button takes you straight to the Templates: Templates (Site) page, and then leaves you to find out for yourself what the affected overrides are. This may be a false positive, as I only have Cassiopeia installed, but I'm not seeing details on the template override changes, so highlighting things need to be checked, but not being able to check them is an issue. Looking for related Issues and PR to troubleshoot that part.

[particthistle]

Additional issue on Overrides Check is mentioned in #32896 (comment)

[brianteeman]

See #33256 although I have no idea how you will test it

[brianteeman]

Can be closed as there is a PR