Compatibility issue with CustomControls compiled against WinAppSDK 1.3

[RobertK66]

Describe the bug

If you (only) reference a WinSDK 1.3 compiled DLL with CustomControl(s) where the Resources dictionary makes use of an ItemsRepeater in its Generic.xaml then a working WinSDK 1.4 App can(!) crash with:

WinRT information: Failed to assign to property 'Microsoft.UI.Xaml.Controls.ItemsRepeater.ItemTransitionProvider'. [Line: 0 Position: 0]

See: https://github.com/RobertK66/WinUi3

In this example repos you can avoid the crash by simply renaming the 'AClassLibrary' project to 'ZClassLibrary'!
It seems that the first DLL loading its resources determines the version of the ItemsRepeater class used!? When the 1.4 App tries to initialize its ItemsRepeater it can not load the 1.4 introduced Property 'ItemTransitionProvider'!

Steps to reproduce the bug

• Make new Solution
• Make App using WinAppSDK 1.4.230913002
• Use some Component with an ItemsRepeater (e.g. ItemsView)

Run and test the App to work properly

• Add a CustomComponent Library named 'AClassLibrary'!
  (keep the library at using WinAppSDK version 1.3.230724000!)
• write some Style using a ItemsRepeater in its TemplateSetter-Template

Recompile solution -> App crashes with above Error.

Expected behavior

It should be possible to use CustomComponents compiled against prior versions without side effects.
See also CommunityToolkit/Windows#234 (comment)

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.4.1: 1.4.230913002

Windows version

Windows 11 (22H2): Build 22621

Additional context

Note: This is a duplicate of #8810
I did not know how to 'bump this up'.
I think in its generic form this points to some more serious issues and should be investigated ....