@room in user suggestions (#1880)

* for now I am using a local RTE solution, need to fix one test

* fixed a test

* new rte version

* pr suggestions

* @room added to the suggestions

* removed empty space

* revert

* code improvement

* project updated

* package

ElementX/Sources/Other/MatrixEntityRegex.swift

@@ -38,7 +38,7 @@ enum MatrixEntityRegex: String {
         case .eventId:
             return "\\$[a-z0-9_\\-\\/]+(:[a-z0-9]+\\.[a-z0-9]+)?"
         case .allUsers:
-            return "@room"
+            return PillConstants.atRoom
         }
     }