[Firefox for Android] Fix Uninstall page opening on mobile Firefox browser

### Please answer the following questions for yourself before submitting an issue

- [X] Filters were updated before reproducing an issue
- [X] I checked the [knowledge base](https://adguard.com/kb/) and found no answer
- [X] I checked to make sure that this issue has not already been filed

### AdGuard Extension version

4.3.53 (Jun 10, 2024)

### Browser version

Firefox mobile 126.0.1

### OS version

Android 13

### Ad Blocking

_No response_

### Privacy

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### Social

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### Annoyances

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### Security

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### Other

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### Language-specific

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### What Stealth Mode options do you have enabled?

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### Issue Details

Steps to reproduce:
1. Uninstall AdGuard ext on mobile Firefox

### Expected Behavior

https://welcome.adguard.info/uninstall-ext.html should be opened automaticly

### Actual Behavior

Page does not open after uninstalling the application

### Screenshots

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### Additional Information

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