[Core] Fix Shapes issue using AppThemeBinding

[jsuarezruiz]

Description of Change

Fix Shapes issue using AppThemeBinding with SolidColorBrush.

Issues Resolved

• fixes [Bug] Line's Stroke and Rectangle's Fill doesn't rendered as expected while changing the system's appearance. #13093
• fixes [Bug] Line's Stroke and Rectangle's Fill doesn't rendered as expected with SolidColorBrush while changing the system's appearance. #13173
• fixes [Bug] Line's Stroke and Rectangle's Fill doesn't rendered as expected with SolidColorBrush while changing the system's appearance. #13359

API Changes

None

Platforms Affected

• Core/XAML (all platforms)
• iOS
• Android
• macOS

Behavioral/Visual Changes

None

Before/After Screenshots

Testing Procedure

Launch Core Gallery and navigate to the issue 13173. Change between system dark and light theme. If the Rectangle is green with the light theme and red with the dark theme, the test has passed.

PR Checklist

• Targets the correct branch
• Tests are passing (or failures are unrelated)

[jsuarezruiz]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[rachelkang]

Created this sample based on the original issue and applied the nuget. On Android, it works great. On iOS, it works fine if I rebuild after switching the app theme, but not if I just switch the app theme and then return to the running app. Looks great in CG on both platforms for both scenarios though

Issue13093.zip

[AlleSchonWeg]

Hi @jfversluis ,
i ran into this issue. Could we merge this PR in the next SR?
Thank you

[jfversluis]

@AlleSchonWeg NuGet should be here, let me know if it looks OK to you!

[jfversluis]

Looks OK to me!

[AlleSchonWeg]

@jfversluis
Yes. Works as expected.
Thx