firebase_app_installations: Type '_TypeError' is not a subtype of type 'JSValue' in type cast when using FirebaseInstallations.instance.getId() in Flutter Web with WebAssembly (Wasm)

### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Which plugins are affected?

App Installations

### Which platforms are affected?

Web

### Description

I'm encountering a Type '_TypeError' is not a subtype of type 'JSValue' in type cast error when using FirebaseInstallations.instance.getId() in a Flutter Web app targeting WebAssembly (Wasm). The same code works fine in non-Wasm environments.

### Reproducing the issue

- Create a Flutter Web app targeting WebAssembly.
- Call FirebaseInstallations.instance.getId().
- Encounter the error message.

### Firebase Core version

3.12.1

### Flutter Version

3.29.1

### Relevant Log Output

```shell

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.29.1, on Microsoft Windows [Version 10.0.26100.3194], locale en-US)
[√] Windows Version (11 Famille 64-bit, 24H2, 2009)
[√] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.9.2)
[√] Android Studio (version 2024.3)
[√] VS Code (version 1.98.0)
[√] Connected device (3 available)
    ! Device emulator-5562 is offline.
[√] Network resources

• No issues found!
```

### Flutter dependencies



<details>
<summary>Expand <code>Flutter dependencies</code> snippet</summary>
<br>

```yaml

Replace this line with the contents of your `flutter pub deps -- --style=compact`.

```

</details>


### Additional context and comments

The issue only occurs when targeting WebAssembly (Wasm), and works in regular Flutter Web builds.