bug: ios, scroll latching incorrect on pwas

# Bug Report

**Ionic version:**

[ ] **4.x**
[x] **5.x**

**Current behavior:**
Scroll no longer works normally after opening the keyboard on IOS/PWA only

**Expected behavior:**
Scroll should work the same as before opening the keyboard

**Steps to reproduce:**
Open/close keyboard touch header and start scrolling.

**Related code:**


```

Blank

import { IonContent, IonHeader, IonPage, IonTitle, IonToolbar } from '@ionic/vue';
import { defineComponent } from 'vue';

export default defineComponent({
name: 'Home',
components: {
IonContent,
IonHeader,
IonPage,
IonTitle,
IonToolbar
}
});

```

**Other information:**

**Ionic info:**

```

Ionic:

Ionic CLI : 6.12.4 (C:\Users\Maxime\AppData\Roaming\npm\node_modules\@ionic\cli)
Ionic Framework : @ionic/vue 5.5.5

Capacitor:

Capacitor CLI : 2.4.6
@capacitor/core : 2.4.6

Utility:

cordova-res : not installed
native-run : 1.3.0

System:

NodeJS : v14.8.0 (C:\Program Files\nodejs\node.exe)
npm : 6.14.11
OS : Windows 10

```

Start by reproducing the behavior in the provided Ionic Vue template on an iOS PWA: open and close the keyboard, touch the header, and scroll. Compare scrolling before and after the keyboard interaction, using the listed @ionic/vue components and version information as context. Done means scrolling behaves normally after the keyboard is opened and closed.

Written by the indexing model from the issue text.