In IOS url was not open in the ngOnInit function in ionic 3

# Bug Report

## Problem
Unable to load the url in the ngOnInit function in ionic 3 version
### What is expected to happen?
While opening the app default web link should be open in the mobile app

### What does actually happen?
But it displayed the home page

## Information

### Command or Code

### Environment, Platform, Device

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { InAppBrowser, InAppBrowserOptions } from '@ionic-native/in-app-browser/ngx';

@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
url: String;
constructor(public navCtrl: NavController, private inAppBrowser: InAppBrowser) {

console.log('testing');
}
ngOnInit(){
console.log('nginit');
this.openWebpage_fun();
}

ionViewDidLoad() {
console.log('ion view load before');
}

openWebpage_fun() {
console.log('ion view load function');
const options: InAppBrowserOptions = {
zoom: 'no',
hidden:'no',
toolbar:'no',
location:'no',
presentationstyle:'fullscreen',
clearcache:'yes',
clearsessioncache:'yes'
}
var url_val='https://google.com';
// Opening a URL and returning an InAppBrowserObject
const browser = this.inAppBrowser.create(url_val, '_blank', options);
// Inject scripts, css and more with browser.X
}

}

### Version information

Cordova: 8.1.2
Platforms: IOS
Plugins: inappbrowser- 3.0.0
CLI - 3.9
Xcode: 10.1

## Checklist

- [x] I searched for existing GitHub issues
- [x] I updated all Cordova tooling to most recent version
- [x] I included all the necessary information above

Start with the HomePage ngOnInit entry point and its call to openWebpage_fun, then reproduce the iOS launch behavior using the shown InAppBrowser.create call and the listed Cordova, plugin, CLI, and Xcode versions. Done means the configured URL opens instead of the home page, with the result confirmed on iOS.

Written by the indexing model from the issue text.