update to newer versions of msagl

[x-a-a-d]

I found that recently there has been some development in original msagl library. Would it be possible to incorporate those updates in this lib? Please see enclosed patch with following updates of dependencies:

• .net9.0
• avalonia 11.3.2
• msagl (repo: https://github.com/microsoft/automatic-graph-layout.git, hash: c097db8dbda28ce24be3c324f962436f1a8453b3)

In my limited use case it works well with one observable benefit - diagram generation seems to be reproducible now. Previously each execution generated slightly different layout with the same inputs.

0001-update-to-net9.0-avalonia-11.3.2-msagl-c097db8dbda28.patch