Wrapping the watch in the elm.focus

Seems to bring the watch calls way down.

src/Umbraco.Web.UI.Client/src/common/directives/validation/nodirtycheck.directive.js

@@ -10,10 +10,14 @@ function noDirtyCheck() {
         require: 'ngModel',
         link: function (scope, elm, attrs, ctrl) {
 
-            scope.$watch(function () {
-                ctrl.$pristine = false;
+            elm.focus(function () {
+                scope.$watch(function() {
+                    ctrl.$pristine = false;
+                    console.log("here");
+                });
             });
 
+
         }
     };
 }