KBM improvements

[niels9001]

• Uses Common.UI.Controls for KeyVisual and KeyCharPresenter, deleted custom controls
• Added input validation before clicking the save button.
• Added an empty state when there are no remappings
• Minor XAML fixes and improvements

[github-actions]

@check-spelling-bot Report

🔴 Please review

See the 📂 files view, the 📜action log, or 📝 job summary for details.

Unrecognized words (2)

commoncontrols
kbmcontrols

To accept these unrecognized words as correct, you could run the following commands

... in a clone of the git@github.com:microsoft/PowerToys.git repository
on the niels9001/kbm-commoncontrols branch (ℹ️ how do I use this?):

curl -s -S -L 'https://raw.githubusercontent.com/check-spelling/check-spelling/c635c2f3f714eec2fcf27b643a1919b9a811ef2e/apply.pl' |
perl - 'https://github.com/microsoft/PowerToys/actions/runs/22230246447/attempts/1' &&
git commit -m 'Update check-spelling metadata'

Warnings ⚠️ (1)

See the 📂 files view, the 📜action log, or 📝 job summary for details.

⚠️ Warnings	Count
⚠️ ignored-expect-variant	3

See ⚠️ Event descriptions for more information.

If the flagged items are 🤯 false positives

If items relate to a ...

• binary file (or some other file you wouldn't want to check at all).

  Please add a file path to the excludes.txt file matching the containing file.

  File paths are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your files.

  ^ refers to the file's path from the root of the repository, so ^README\.md$ would exclude README.md (on whichever branch you're using).

• well-formed pattern.

  If you can write a pattern that would match it,
  try adding it to the patterns.txt file.

  Patterns are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your lines.

  Note that patterns can't match multiline strings.