feat(mtconnect): authoring DataType warning + loud ignored-DeviceName warning (#613 slice)

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/TagEditors/MTConnectTagConfigEditor.razor

@@ -80,6 +80,10 @@
 {
     <div class="text-danger small mt-2">@error</div>
 }
+@foreach (var warning in _m.Warnings())
+{
+    <div class="text-warning small mt-2">@warning</div>
+}
 
 @code {
     /// <summary>The tag's raw TagConfig JSON (supports <c>@bind-ConfigJson</c>).</summary>