Update dependency Avalonia.ReactiveUI to v11.0.11

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Avalonia.ReactiveUI (source)	11.0.10 -> 11.0.11

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Release Notes

AvaloniaUI/Avalonia (Avalonia.ReactiveUI)

v11.0.11

Compare Source

https://www.nuget.org/packages/Avalonia/11.0.11
Full Changelog: AvaloniaUI/Avalonia@11.0.10...11.0.11

What's Changed

• Implement MacOSProperties.IsTemplateIcon attached property on TrayIcon by @​maxkatz6 in #​14348
• Create a new run loop observer for a nested loop if it's being started from an observer callback by @​kekekeks in #​15425
• Fix VirtualizingStackPanel ScrollIntoView by @​grokys in #​15449
• [Win] Fix composition on focus change by @​Gillibald in #​15907

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