Apply code style formatting and restore partial modifiers on Avalonia views

Linter/formatter pass across the full codebase. Restores required partial
keyword on AXAML code-behind classes that the formatter incorrectly removed.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/ZB.MOM.WW.LmxOpcUa.Client.CLI.Tests/CommandBaseTests.cs

@@ -1,4 +1,3 @@
-using CliFx.Infrastructure;
 using Shouldly;
 using Xunit;
 using ZB.MOM.WW.LmxOpcUa.Client.CLI.Commands;
@@ -87,4 +86,4 @@ public class CommandBaseTests
 
         fakeService.LastConnectionSettings!.FailoverUrls.ShouldBeNull();
     }
-}
+}