feat(popover): popover can now be used inline (#23231)

BREAKING CHANGE: Converted `ion-popover` to use the Shadow DOM.

packages/vue/scripts/copy-overlays.js

@@ -28,11 +28,6 @@ function generateOverlays() {
       controller: 'pickerController',
       name: 'IonPicker'
     },
-    {
-      tag: 'ion-popover',
-      controller: 'popoverController',
-      name: 'IonPopover'
-    },
     {
       tag: 'ion-toast',
       controller: 'toastController',