bug: UI Overlap with System Navigation Buttons on Android 15 in 3-Button Navigation Mode

### Prerequisites

- [x] I have read the [Contributing Guidelines](https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#creating-an-issue).
- [x] I agree to follow the [Code of Conduct](https://ionicframework.com/code-of-conduct).
- [x] I have searched for [existing issues](https://github.com/ionic-team/ionic-framework/issues) that already report this problem, without success.

### Ionic Framework Version

v7.x

### Current Behavior

I have designed a project using Ionic 7 and Capacitor 7, where I have implemented tabs navigation. When I build the Android APK and run it on Android 15, the UI/UX appears fine when gesture navigation is enabled. However, when I switch to 3-button navigation, the system navigation buttons overlap with the app's buttons, causing the UI to become distorted and negatively affecting the user experience.

### Expected Behavior

App Height must be auto adjustable

### Steps to Reproduce



### Code Reproduction URL

https://github.com/

### Ionic Info

Ionic:

Ionic CLI : 7.2.0 (C:\Users\dell\AppData\Roaming\nvm\v22.5.1\node_modules\@ionic\cli)
Ionic Framework : @ionic/angular 8.5.2
@angular-devkit/build-angular : 18.2.16
@angular-devkit/schematics : 18.2.16
@angular/cli : 18.2.16
@ionic/angular-toolkit : 11.0.1

Capacitor:

Capacitor CLI : 7.1.0
@capacitor/android : 7.1.0
@capacitor/core : 7.1.0
@capacitor/ios : not installed

Utility:

cordova-res : 0.15.4
native-run : 2.0.1

System:

NodeJS : v22.5.1 (C:\Program Files\nodejs\node.exe)
npm : 10.8.2
OS : Windows 10

### Additional Information

_No response_

Start by reproducing the tabs navigation project on Android 15 with 3-button navigation, comparing it with gesture navigation. Done means the system navigation buttons no longer overlap the app UI and the app height adjusts correctly; no source file or test is identified in the issue.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.