[Workspaces] Sequential launch

[SeraphimaZykova]

Summary of the Pull Request

Launching the next instance of the app only after the previous one has appeared. This ensures that we avoid errors when launching other instances (e.g. "The app is already running") and placing app instances in the correct positions.

PR Checklist

• Closes: [Workspaces] Doesn't remember workspaces from Ms Edge. #34675, two outlook windows, one on two different screens does not work both go to the same screen #34730, Workspaces doesn't work properly with multiple Firefox windows #35010
• 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

Validation Steps Performed

• Launch a workspace with several instances of the app, e.g., Outlook. Verify all instances are launched without error, and placed correctly.
• Verify canceling the launch works as expected.

[crutkas]

Does #35059 and this conflict?

[donlaci]

@crutkas #35059 will be deleted, this one will be kept.

[donlaci]

Great work!

[crutkas]

/azp run

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