<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
Update private notification and ado assignment email to
PowerToys@microsoft.com
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
- [ ] **Closes:** #xxx
- [ ] **Communication:** I've discussed this with core contributors
already. If the 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](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx
<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments
<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
* Add Powershell script to validate whether CSharp project correctly import shared props, update pipeline to enforce such validation, and fixed all projects that didn't import this shared props correctly
* add common props for fuzz test project
* update the path
* Only scans projects in src sub-folder
* Update .pipelines/verifyCommonProps.ps1
* Update csproj to include Common.Dotnet.CsWinRT.props
* Fix indentation in RegistryPreview.FuzzTests.csproj
* exclude TemplateCmdPalExtension.csproj in validation process
* exclude TemplateCmdPalExtension.csproj in validation process
---------
Co-authored-by: Leilei Zhang <leilzh@microsoft.com>
Co-authored-by: Jerry Xu <nxu@microsoft.com>
