Revert "Takes the last commit from #9216 to make umb-confirm-action backwards compatible"

This reverts commit 174909d735.

src/Umbraco.Web.UI.Client/src/common/directives/components/umbconfirmaction.directive.js

@@ -97,7 +97,7 @@ The prompt can be opened in four direction up, down, left or right.</p>
       templateUrl: 'views/components/umb-confirm-action.html',
       scope: {
         direction: "@",
-        show: "<?",
+        show: "<",
         onDelete: "&?",
         onConfirm: "&",
         onCancel: "&"

src/Umbraco.Web.UI.Client/src/views/components/umb-confirm-action.html

@@ -12,7 +12,7 @@
         '-right': direction === 'right',
         '-bottom': direction === 'bottom',
         '-left': direction === 'left'}"
-        on-outside-click="clickCancel()" ng-if="show !== false">
+        on-outside-click="clickCancel()" ng-if="show">
 
         <button type="button" class="btn-reset umb_confirm-action__overlay-action -confirm" ng-click="clickConfirm()" localize="title" title="@buttons_confirmActionConfirm">
             <umb-icon icon="icon-check" class="icon-check"></umb-icon>