adding correct events on plans page (#15951)

GitOrigin-RevId: d86b9cff07b9179a80b19ecdca1542ff8f9c9cd1

services/web/app/views/subscriptions/plans/_group_plan_modal.pug

@@ -1,10 +1,6 @@
 div.modal.fade(tabindex="-1" role="dialog" data-ol-group-plan-modal)
 	.modal-dialog(role="document")
-		.modal-content(
-			event-tracking="form-submitted-groups-modal-open"
-			event-tracking-mb="true"
-			event-tracking-trigger="load"
-		)
+		.modal-content
 			.modal-header
 				button.close(
 					type="button"

services/web/frontend/js/features/plans/group-plan-modal/index.js

@@ -61,6 +61,7 @@ modalEl
   .on('shown.bs.modal', function () {
     const path = `${window.location.pathname}${window.location.search}`
     history.replaceState(null, document.title, path + '#groups')
+    eventTracking.sendMB('form-submitted-groups-modal-open')
   })
   .on('hidden.bs.modal', function () {
     const path = `${window.location.pathname}${window.location.search}`