Opening a _blank window from a _blank window destroys the first window

# Bug Report

## Problem
I use an IAB instance to load my site into a Cordova webview in a _blank window so I can catch calls to window.open and replace them with cordova.InAppBrowser.open. This works fine the first time, however when the new window loads (also _blank) the first IAB instance seemingly gets destroyed (after inspecting, it is actually set to about:blank).

### What is expected to happen?
The first IAB instance should load the second and still exist when the second instance is closed.

### What does actually happen?
The first IAB instance loads the second but seemingly gets destroyed in the process.

## Information

### Command or Code

```
document.addEventListener('deviceready', function() {
var url = 'https://example.com/login/';
newWindowRef = cordova.InAppBrowser.open( url, '_blank', 'location=no,toolbar=no' );
listenForMessage( newWindowRef );
newWindowRef.addEventListener( 'loadstop', assignWindowOpenFunction );
}, false);

function assignWindowOpenFunction() {
newWindowRef.executeScript({
code: "\
function openWinFromApp( url, target, options ) {\
var obj = {\
url: url,\
target: target,\
options: options\
};\
var objStr = JSON.stringify(obj);\
webkit.messageHandlers.cordova_iab.postMessage(objStr);\
}\
window.open = openWinFromApp;"
},
function( result ) {
}
);
}

function listenForMessage( win ) {
win.addEventListener( 'message', function( params ) {
var newWin = cordova.InAppBrowser.open( params.data.url, '_blank', 'toolbar=yes,location=yes' );
listenForMessage( newWin );
} );
}
```

### Environment, Platform, Device

OS = Windows 10, Platform = Android (testing on Samsung Galaxy A12)

### Version information

Cordova CLI v 11.0.0, IAB 5

## 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

The entry points shown are cordova.InAppBrowser.open, loadstop, executeScript, and the message listener on Android. Reproduce nested _blank opens on the stated Cordova/Android setup, then inspect the InAppBrowser lifecycle around the first window’s navigation to about:blank. Done means the first IAB remains available after the second closes, with the reported flow still working.

Written by the indexing model from the issue text.