[firebase-admob] [iOS] When a NativeAdView comes back into view, an error is thrown (iOS only)

[LewisSmallwood]

See attached error log. I can fix this by checking if the child already has a parent before calling this code.

[LewisSmallwood]

Should have mentioned this was on version 2.4.1.

The fix for this was:

 onLoaded() {
        super.onLoaded();
        if (this._child && !this._child.nativeView.isDescendantOfView(this._native)) {
            this._addView(this._child);
            this._native.addSubview(this._child.nativeView);
        }
    }

But it has already been resolved in 2.4.4 when migrating to the content view.