[Workspaces] Fix case: monitor not present at launch

[donlaci]

Summary of the Pull Request

If the monitor is not detected at launch, which is stored in the config, set coordinates to the main window work area

PR Checklist

• Closes: #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated
• New binaries: Added on the required places
  • JSON for signing for new binaries
  • WXS for installer for new binaries and localization folder
  • YML for CI pipeline for new test projects
  • YML for signed pipeline
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

If the monitor is not detected at launch, we make the window minimised. The PR adds also, that the window coordinates are set to main window's work area. It is needed, because the coordinates can be outside of visible area and after restoring the window, it won't be visible. The fix sets the coordinates too.

Validation Steps Performed

[jaimecbernardo]

Thanks for opening this PR. CI is failing because of some XAML style errors that got into main. Please merge latest main in to fix that. Thank you