[ionic v4] can't dismiss modal from current modal page component

Bug Report

Ionic Info

Ionic:

   ionic (Ionic CLI)          : 4.0.5 (/usr/local/lib/node_modules/ionic)
   Ionic Framework            : @ionic/angular 4.0.0-beta.2
   @angular-devkit/core       : 0.7.2
   @angular-devkit/schematics : 0.7.2
   @angular/cli               : 6.1.2
   @ionic/ng-toolkit          : 1.0.5
   @ionic/schematics-angular  : 1.0.4

Cordova:

   cordova (Cordova CLI) : 6.5.0
   Cordova Platforms     : not available

System:

   ios-deploy : 1.9.2
   ios-sim    : 6.1.3
   NodeJS     : v8.9.4 (/usr/local/bin/node)
   npm        : 5.6.0
   OS         : macOS High Sierra
   Xcode      : Xcode 9.4.1 Build version 9F2000

Environment:

   ANDROID_HOME : not set

Describe the Bug In v3 of ionic, we can use viewController to dismiss from current modal component.But in v4, there is not viewController in @ionic/angular.

Steps to Reproduce Steps to reproduce the behavior:

1. Creating any modal and present with a page component.
2. Can’t dismiss this modal from current modal inside.

Expected Behavior I think we need a service to dismiss from modals.

[peterpeterparker]

modalController.dismiss() -> dismiss modal popoverController.dismiss() -> dismiss popover

[ionitron-bot[bot]]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.