[Bug]: Android Capacitor Returns UTF-8 Binary String Instead of Blob for Binary Responses

### Capacitor Version

Capacitor Doctor

Latest Dependencies:

@capacitor/cli: 7.1.0
@capacitor/core: 7.1.0
@capacitor/android:
7.1.0
@capacitor/ios: 7.1.0

Installed Dependencies:

@capacitor/ios: not installed
@capacitor/cli: 7.1.0
@capacitor/core: 7.1.0
@capacitor/android: 7.1.0

[success] Android looking great! 👌

### Other API Details

```Shell
npm -v 10.9.2

node -v v23.9.0
```

### Platforms Affected

- [ ] iOS
- [x] Android
- [ ] Web

### Current Behavior

When making network requests with `responseType: 'blob'` on Android with Capacitor, instead of receiving a proper Blob object like on web platforms, the response is a UTF-8 encoded binary string. This inconsistency causes issues when trying to handle binary data like audio files across different platforms.

- **On web:** `response.data` is a proper Blob object


-
- **On Android:** `response.data` is a UTF-8 encoded binary string


### Expected Behavior

When making a request with `responseType: 'blob'`, the response should be a standard Blob object on all platforms (web and Android), allowing consistent code handling.

### Project Reproduction

https://gist.github.com/layola13/55bd89421c9e82d066d584b80f0da551

### Additional Information

This inconsistency makes it difficult to handle binary responses in a cross-platform manner. Ideally, Capacitor should normalize the response type to be consistent with web behavior, returning a proper Blob object when `responseType: 'blob'` is specified.