[Settings]Fix WinUI3 publish issues

[jaimecbernardo]

Summary of the Pull Request

What is this about:

After #17797 , settings won't open when ran from the installer.
The main reason for it is that after running publish for building the installer, it's not properly configured to use the proper "win10-x64" runtime identifier.

What is included in the PR:

• Use the "win10-x64" runtime identifier for building.
• Use the "win10-(target)" for publishing.
• With proper publishing, native runtimes for winappsdk are now copied to their proper places alongside the settings executable, so update installer.
• WinAppSDK 1.0.2 mentions some fixes for building with .net 6 https://docs.microsoft.com/en-us/windows/apps/windows-app-sdk/stable-channel#version-102 , so upgrade WinAppSDK to latest (1.0.3).

How does someone test / validate:
After release CI pipelines build, give it a test.

Quality Checklist

• Linked issue: Migrate Settings to Desktop WinUI3 application #6715
• Communication: I've discussed this with core contributors in the issue.
• Tests: Added/updated and all pass
• Installer: Added/updated and all pass
• Localization: All end user facing strings can be localized
• Docs: Added/ updated
• Binaries: Any new files are added to WXS / YML
  • No new binaries
  • YML for signing for new binaries
  • WXS for installer for new binaries

Contributor License Agreement (CLA)

A CLA must be signed. If not, go over here and sign the CLA.

[jaimecbernardo]

Just adding a docs update commit. Build from release pipeline will still be valid.

[crutkas]

Signing got stuck again. I kicked off a new build.