[Multi-Monitor] The icon and dot-line of Treeview are not scaled well when DPIs differ
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- C#
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Description
* .NET Core Version:
.NET 6.0.100-preview.6.21313.2 + private binaries build from main branch in dotnet/winforms repo.
[New.zip](https://github.com/dotnet/winforms/files/6653328/New.zip)
* Have you experienced this same bug with .NET Framework?:
No
**Expected behavior:**
The icon and dot-line of Treeview are scaled well when DPIs differ
**Minimal repro:**
1. Set the primary screen as 100% DPI, and secondary screen 300% DPI.
2. Open the attached the application.
[Issue14.zip](https://github.com/dotnet/winforms/files/6653330/Issue14.zip)
3. Build & run the application.
4. Moving the form from 100% primary screen to 300% secondary screen.
**Actual Results:**
100% primary screen:

Move to 300% secondary screen:

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Assessment
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