Regex symbols in File search are cleared after opening file while search

### Description
https://user-images.githubusercontent.com/43252954/183340772-ad48dcb0-1117-4537-ad69-c255eceb0776.mp4

### DBeaver Version

22.1.4

### Operating System

win11

### Database and driver

not specific

### Steps to reproduce

1. in main menu go to Search->File search
2. In the "Containing text" field input something with special regex characters (^a*) and start search
3. Double click on the founded item
4. Open File search again. Here you see that special characters are erased

### Additional context

_No response_