Fixes TileBrush transform handling

[Gillibald]

What does the pull request do?

What is the current behavior?

What is the updated/expected behavior with this PR?

How was the solution implemented (if it's not obvious)?

Checklist

• Added unit tests (if possible)?
• Added XML documentation to any related classes?
• Consider submitting a PR to https://github.com/AvaloniaUI/avalonia-docs with user documentation

Breaking changes

Obsoletions / Deprecations

Fixed issues

[BAndysc]

I went to see if maybe this PR also fixes #11959 (unfortunately doesn't look like)

But additionally, it renders incorrectly again: before the commit More adjustments

(might be related to my screen dpi?)

After the commit the grid is completely gone:

[Gillibald]

Looks like there is no test coverage here. Can you provide me the brush definition that isn't working?

[BAndysc]

<DrawingBrush TileMode="Tile"
              DestinationRect="0 0 15 15">
    <DrawingBrush.Drawing>
        <GeometryDrawing Geometry="M0,0 L0,1 0.03,1 0.03,0.03 1,0.03 1,0 Z"
                         Brush="Red" />
    </DrawingBrush.Drawing>
</DrawingBrush>

even with no transform attached. It is completely blank after the latest commit. But it might be due to my screen scaling (macbook retina x2 scaling).

Regular grid is expected:

[Gillibald]

The PR currently does not handle all Stretch modes that might cause this. Thanks for the sample.

[avaloniaui-bot]

You can test this PR using the following package version. 11.2.999-cibuild0046722-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[avaloniaui-bot]

You can test this PR using the following package version. 11.2.999-cibuild0046749-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[avaloniaui-bot]

You can test this PR using the following package version. 11.2.999-cibuild0046819-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]