Make interop type obsolete

Author: tmat

src/Components/WebAssembly/WebAssembly/src/HotReload/WebAssemblyHotReload.cs

@@ -20,6 +20,7 @@ namespace Microsoft.AspNetCore.Components.WebAssembly.HotReload;
 /// code.
 /// </summary>
 [EditorBrowsable(EditorBrowsableState.Never)]
+[Obsolete("For framework use only.")]
 [UnconditionalSuppressMessage(
     "Trimming",
     "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code",