auth-compat module incorrectly detects Capacitor/Cordova environment on iPad

### Operating System

iPadOS 17.6.1

### Environment (if applicable)

Cordova/Capacitor app running in WKWebview on iPadOS

### Firebase SDK Version

11.2.0

### Firebase SDK Product(s)

Auth

### Project Tooling

Cordova app with webpack

### Detailed Problem Description

The [auth-compat](https://github.com/firebase/firebase-js-sdk/tree/main/packages/auth-compat) module relies on matching the URL scheme and user agent string to detect whether it is running in a Cordova/Capacitor Webview in [`_isAndroidOrIosCordovaScheme`](https://github.com/firebase/firebase-js-sdk/blob/main/packages/auth-compat/src/platform.ts#L52).

However, since iPadOS 13 (circa 2019), Safari (and its WKWebView implementation) began identifying itself with a user agent string similar to that of macOS to provide a desktop-like browsing experience. This change means that the user agent string no longer contains iPad and instead resembles that of a Mac.
For example the user agent string of my iPad Simulator is `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148`.

This means the current detection fails to correctly detect that it is running in a Cordova/Capacitor Webview when running on an iPad, so assumes it's a desktop browser environment.
Therefore when the auth-compat module is imported, this leads to a run-time error:


### Steps and code to reproduce issue

- On macOS with [ionic environment](https://ionicframework.com/docs/intro/environment) for [iOS development for Cordova](https://ionic-docs-o31kiyk8l-ionic1.vercel.app/docs/v6/developing/ios):
- Run in Terminal:
- `ionic start firebase-test blank --type=angular --cordova && cd firebase-test`
- `npm install -g @angular/cli`
- `ng add @ionic/cordova-builders`
- `ionic cordova platform add ios`
- Edit `src/main.ts` and add:
```
window.onerror = function (message) {
alert(message);
}
```
- Run in Terminal:
- `ionic build`
- `cordova platform prepare ios`
- Open `platforms/ios/firebase-test.xcworkspace` in Xcode
- In Xcode, select a connected physical iPad or an iPad Simulator and then select "Run"
- Observe that app launches without errors

Then add the Firebase SDK:
- Run in Terminal: `npm i firebase`
- Edit `src/main.ts` and add:
```
import firebase from '@firebase/app-compat';
import '@firebase/auth-compat';

const config = {
// your project config
};
firebase.initializeApp(config)
console.log(firebase.auth().currentUser);
```
- Run in Terminal:
- `ionic build`
- `ionic cordova prepare ios`
- In Xcode, select a connected physical iPad or an iPad Simulator and then select "Run"
- Observe than an error dialog appears
- Inspect Webview with Safari Devtools and observer errors are due to Firebase SDK