fix(DataGrid): not displaying cells from last columns when resized from scrolled state

[Xiaoy312]

for: CommunityToolkit#5010

PR Type

What kind of change does this PR introduce?

• Bugfix

What is the current behavior?

In certain situation, when the data-grid resizes from needing a scrollbar to not, certain cells is no longer visible.

What is the new behavior?

Scrolled cells will remain visible after resize.

PR Checklist

Please check if your PR fulfills the following requirements:

• Tested code with current supported SDKs
• New component
  • Pull Request has been submitted to the documentation repository instructions. Link:
  • Added description of major feature to project description for NuGet package (4000 total character limit, so don't push entire description over that)
  • If control, added to Visual Studio Design project
• Sample in sample app has been added / updated (for bug fixes / features)
  • Icon has been created (if new sample) following the Thumbnail Style Guide and templates
• New major technical changes in the toolkit have or will be added to the Wiki e.g. build changes, source generators, testing infrastructure, sample creation changes, etc...
• Tests for the changes have been added (for bug fixes / features) (if applicable)
• Header has been added to all new source files (run build/UpdateHeaders.bat)
• Contains NO breaking changes

Other information

same fix on wct: CommunityToolkit#5011

[jeromelaban]

@Mergifyio backport unorel/winui/7.1.200

[mergify]

backport unorel/winui/7.1.200

✅ Backports have been created

• #225 fix(DataGrid): not displaying cells from last columns when resized from scrolled state (backport #224) has been created for branch unorel/winui/7.1.200