filter lists not being updated / don't contain all rules

### Issue Details

- **AdGuard version:**
- AdGuard/AdGuard Pro for iOS v4.3.3(947)
- **Device model and storage size:**
- iphone 13 128gb
- **Operating system and version:**
- ios 15.1.1
- **Browser or App:**
- safari

### Expected Behavior

same number of rules when re-adding the list as a custom filter list

### Actual Behavior

the easylist that came with the app only has 12219 rules but when i re-add easylist as a custom filter list there are 35730 rules

### Screenshots

the easylist that came with the app:
it appears to have never updated since i downloaded the app months ago (22 Dec 2021)


after disabling and re-enabling it it seems to have updated but it only gained a few more rules:


after re-adding easylist as a custom filter list from the same url:


### Additional Information
my filter lists don't seem to be getting updated, and when they do, it's only adding a fraction of the rules. as a result, i've started seeing ads again on many different sites