update avalonia with multiple fixes
MODIFY
Directory.Build.targets
Directory.Build.targets
<Project>
<PropertyGroup>
- <AvaloniaVersion>0.7.1-build566-beta</AvaloniaVersion>
+ <AvaloniaVersion>0.7.1-build697-beta</AvaloniaVersion>
<AvaloniaBehaviorsVersion>0.6.2-build562</AvaloniaBehaviorsVersion>
</PropertyGroup>

MODIFY
WalletWasabi.Dependencies/AvalonStudio.Shell
WalletWasabi.Dependencies/AvalonStudio.Shell
-Subproject commit e0e5309a7d76fedcfa4f8dfe9046859c16cf2e27
+Subproject commit b40507bbdabb83e48388f4d7969cc4f49aeb0975

update avalonia with multiple fixes