VPN-6771: Update github tests and workflows to Qt 6.10

[oskirby]

Description

This updates the tests and assorted github workflows to use Qt 6.10 wherever possible. One notable exception for now is WASM, which will be left for a separate PR.

There were two tests that required a bit of refactoring to fix:

• The Windows unit tests were failing because we no longer build Qt for debug. We had to switch the unit test job to build as RelWithDebInfo, which then required a bunch of cleanup to use QVERIFY() instead of Q_ASSERT().
• The factory reset test was failing on macOS. As best as I could tell the failure was caused by a spacing change which moved one of the UI elements beneath the nav bar, and since it was based on ViewFullScreen.qml it is wasn't scrollable into view. To resolve this, I opted to convert the factory reset into something built upon MZViewBase and just got rid of ViewFullScreen.qml entirely as this was the only place it was being used.

Reference

JIRA Issue: VPN-6771

Checklist

• My code follows the style guidelines for this project
• I have not added any packages that contain high risk or unknown licenses (GPL, LGPL, MPL, etc. consult with DevOps if in question)
• I have performed a self review of my own code
• I have commented my code PARTICULARLY in hard to understand areas
• I have added thorough tests where needed

[oskirby]

The windows tests are currently failing because of QTBUG-141830 and should be fixed by #10970

[mcleinman]

Thanks!