Some cosmetic filters are not working in embedded video on Firefox extension

### Prerequisites

Please answer the following questions for yourself before submitting an issue. **YOU MAY DELETE THE PREREQUISITES SECTION.**

- [x] I am running the latest version
- [x] I checked the documentation and found no answer
- [x] I checked to make sure that this issue has not already been filed

### Issue Details

URL: [NSFW] `https://openloadpro.com/iv/707833/` (from https://github.com/AdguardTeam/AdguardFilters/issues/120699)
These cosmetic filters are not working in iframe player with Firefox extension while are working with Chrome extension:
```
hqq.*##a[href="https://t.me/Russia_Vs_Ukraine_War3"]
hqq.*##a[onclick="openAuc();"]
```
The same for `hqq.to##a[onclick="openAuc();"]` in Base at the time.

- **AdGuard version:**
4.0.181
- **Browser and version:**
Firefox 101.0
- **Operating system and version:**
Windows 10
- **Filters you use in AdGuard:**
Base, Japanese
- **Stealth Mode settings:**
Disabled
- **Other browser extensions:**
Nothing

### Expected Behavior

They should work as in Chrome.

### Actual Behavior

Not

### Screenshots

Omitted

### Additional Information