fix(kit): Push fix directive change detection (#6681)

Co-authored-by: taiga-family-bot <[email protected]>

projects/kit/components/push/push-alert.template.html

@@ -1,5 +1,5 @@
 <tui-push
-    *ngIf="!isDirective; else $any(context.content).template"
+    *ngIf="!isDirective; else directive"
     [heading]="context.heading"
     [timestamp]="context.timestamp"
     [type]="context.type"
@@ -36,3 +36,6 @@
         {{ context.buttons[context.buttons.length - 1] }}
     </button>
 </tui-push>
+<ng-template #directive>
+    <ng-container *polymorpheusOutlet="context.content"></ng-container>
+</ng-template>