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.Tests/SampleTest.cs

@@ -4,12 +4,12 @@ using Xunit;
 namespace ZB.MOM.WW.LmxOpcUa.Tests
 {
     /// <summary>
-    /// Placeholder unit test that keeps the unit test project wired into the solution.
+    ///     Placeholder unit test that keeps the unit test project wired into the solution.
     /// </summary>
     public class SampleTest
     {
         /// <summary>
-        /// Confirms that the unit test assembly is executing.
+        ///     Confirms that the unit test assembly is executing.
         /// </summary>
         [Fact]
         public void Placeholder_ShouldPass()
@@ -17,4 +17,4 @@ namespace ZB.MOM.WW.LmxOpcUa.Tests
             true.ShouldBeTrue();
         }
     }
-}
+}