Add check "IsDarkModeEnabled" for FocusForeColor of the CheckedListBox and PropertyGrid

[LeafShi1]

Fixes #13767

Proposed changes

• Add judgement IsDarkModeEnabled for FocusForeColor of the CheckedListBox and PropertyGrid

Customer Impact

• The selected item of the control CheckedListBox and PropertyGrid can be show clearly under DarkMode

Regression?

• No

Risk

• Minimal

Screenshots

Before

When the application is in Dark Mode, the contrast of focusing items in CheckedListBox/PropertyGrid is insufficient.

After

The contrast of focusing items in CheckedListBox/PropertyGrid is sufficient

Test methodology

• Manually

Test environment(s)

• .net 10.0.0-preview.7.25373.104

Microsoft Reviewers: Open in CodeFlow

[Copilot]

Pull Request Overview

This PR improves the visual accessibility of CheckedListBox and PropertyGrid controls in dark mode by adjusting their focus foreground colors to provide better contrast.

• Updates focus foreground color logic to be dark mode-aware
• Changes color selection from always using SystemColors.HighlightText to conditionally using SystemColors.ControlText in dark mode

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
PropertyGrid.cs	Updates _selectedItemWithFocusForeColor field initialization to use dark mode-aware color selection
CheckedListBox.cs	Updates foreColor assignment in OnDrawItem method to use dark mode-aware color selection

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.97766%. Comparing base (ad9d413) to head (9aac464).
⚠️ Report is 41 commits behind head on main.

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main      #13771         +/-   ##
===================================================
+ Coverage   75.81239%   76.97766%   +1.16527%     
===================================================
  Files           3266        3266                 
  Lines         644057      644057                 
  Branches       47638       47640          +2     
===================================================
+ Hits          488275      495780       +7505     
+ Misses        146556      144599       -1957     
+ Partials        9226        3678       -5548     

Flag	Coverage Δ
Debug	76.97766% <0.00000%> (+1.16527%)	⬆️
integration	18.98862% <0.00000%> (?)
production	51.72165% <0.00000%> (+2.60476%)	⬆️
test	97.42226% <ø> (ø)
unit	49.13041% <0.00000%> (+0.01352%)	⬆️

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[ricardobossan]

All LGTM!

[KlausLoeffelmann]

Let's take this for 11 - no need for a dual check-in.

[KlausLoeffelmann]

Looks good to me.
Let's take this for main only, though.