Safari extension icons different shapes in iOS 18

### 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 version

4.5.5

### Environment

- OS: 18
- Device: iPhone 13 Pro

### Ad Blocking

_No response_

### Privacy

_No response_

### Social

_No response_

### Annoyances

_No response_

### Security

_No response_

### Other

_No response_

### Language-specific

_No response_

### Advanced protection for Safari

- [ ] yes, I do

### Which DNS server do you use?

DNS protection disabled

### DNS protocol

DNS protection disabled

### Custom DNS

_No response_

### DNS filtering

- [ ] yes, I do

### Custom DNS filter

_No response_

### DNS implementation

DNS protection disabled

### Tunnel mode

DNS protection disabled

### Low-level settings

Bootstrap server:
Fallback server:
Blocking mode, etc:

### Issue Details

AdGuard Safari extension icons are different shapes.


### Expected Behavior

_No response_

### Actual Behavior

AdGuard Safari extension icon shapes are the same.

### Screenshots

Screenshot 1

### Additional Information

_No response_