message: chore: update "pop over modal" example with new API
diff: -import { Component, ViewContainerRef, Input, ViewChild } from "@angular/core";
  +import { Component, ViewContainerRef, Input, ViewChild, ElementRef } from "@angular/core";
  import { Router, NavigationEnd } from "@angular/router";
  import { ModalDialogService, ModalDialogOptions } from "nativescript-angular/directives/dialogs";
  import { ModalComponent } from "../modal/modal.component";
  @@ -16,14 +16,14 @@ import { ModalViewComponent } from "~/modal-shared/modal-view.component";
  <Button text="Show Modal Without Frame" (tap)="onModalNoFrame()" textAlignment="left"></Button>
  <Button text="Show Modal Page With Frame" (tap)="onModalFrame()" textAlignment="left"></Button>
  <Button text="Show Shared Modal" (tap)="onRootModalTap()" textAlignment="left"></Button>
  - <Button #popoverButtonComp text="Show Dialog" (tap)="onShowDialog()" textAlignment="left"></Button>
  - <Button text="Show 'popover' modal" (tap)="onPopoverModal()" textAlignment="left"></Button>
  + <Button text="Show Dialog" (tap)="onShowDialog()" textAlignment="left"></Button>
  + <Button #popoverButtonComp text="Show 'popover' modal" (tap)="onPopoverModal()" textAlignment="left"></Button>
  </StackLayout>`
  })
  export class BasicsNavigationComponent {
  - @ViewChild("popoverButtonComp") popoverButtonComp;
  + @ViewChild("popoverButtonComp") popoverButtonComp: ElementRef;
  @Input() col: number;
  constructor(
  private modal: ModalDialogService,
  @@ -94,7 +94,7 @@ export class BasicsNavigationComponent {
  ios: {
  presentationStyle: UIModalPresentationStyle.Popover
  },
  - sourceView: this.popoverButtonComp
  + target: this.popoverButtonComp.nativeElement
  };
  this.modal.showModal(ModalViewComponent, options)
  