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>

src/ZB.MOM.WW.LmxOpcUa.Client.Shared/Models/SecurityMode.cs

@@ -1,7 +1,7 @@
 namespace ZB.MOM.WW.LmxOpcUa.Client.Shared.Models;
 
 /// <summary>
-/// Transport security mode for the OPC UA connection.
+///     Transport security mode for the OPC UA connection.
 /// </summary>
 public enum SecurityMode
 {
@@ -13,4 +13,4 @@ public enum SecurityMode
 
     /// <summary>Messages are signed and encrypted.</summary>
     SignAndEncrypt
-}
+}