[MouseWithoutBorders] - apply microsoft#35716 to Thread.cs (.net 9 Lo…

…ck type) - microsoft#35155

src/modules/MouseWithoutBorders/App/Core/Thread.cs

@@ -19,7 +19,7 @@ namespace MouseWithoutBorders.Core;
 
 internal sealed class Thread
 {
-    private static readonly object ThreadsLock = new();
+    private static readonly Lock ThreadsLock = new();
     private static List<System.Threading.Thread> threads;
 
     private readonly System.Threading.Thread thread;