UBERF-6464: update activity mentions display (#5339)

models/document/src/index.ts

@@ -257,6 +257,10 @@ function defineDocument (builder: Builder): void {
     encode: document.function.GetObjectLinkFragment
   })
 
+  builder.mixin(document.class.Document, core.class.Class, view.mixin.ObjectIcon, {
+    component: document.component.DocumentIcon
+  })
+
   // Actions
 
   createAction(builder, {

models/document/src/plugin.ts

@@ -30,7 +30,8 @@ export default mergeIds(documentId, document, {
     NotificationDocumentPresenter: '' as AnyComponent,
     TeamspaceSpacePresenter: '' as AnyComponent,
     Move: '' as AnyComponent,
-    DocumentToDoPresenter: '' as AnyComponent
+    DocumentToDoPresenter: '' as AnyComponent,
+    DocumentIcon: '' as AnyComponent
   },
   completion: {
     DocumentQuery: '' as Resource<ObjectSearchFactory>,