feat(popover): change template in popover to a page similar to modal

add ability to pass event in the transition, so on present of the
popover, clean up the positioning

references #5420

src/transitions/transition.ts

@@ -36,6 +36,7 @@ export interface TransitionOptions {
   direction: string;
   renderDelay?: number;
   isRTL?: boolean;
+  ev?: any;
 }
 
 let TransitionRegistry = {};