Export from query causes internal error when clicking on browse to select destination path

#### System information:
- Operating system (distribution) and version Ubuntu 16.04.07
- DBeaver version CE 21.04.02

#### Describe the problem you're observing:

Export from query causes internal error when clicking on browse to select destination path.

#### Steps to reproduce, if exist:

Right click on a query, execute, export from query, csv, next, next, click the folder icon (browse)

`"Problem occurred, unhandled event loop exception. No more handlers."`

Then I get another error:

```
An SWT error has occurred.
You are recommended to exit the workbench.
Subsequent errors may happen and may terminate the workbench without
warning.
See the .log file for more details
```

#### Include any warning/errors/backtraces from the logs

[dbeaver-debug.log](https://github.com/dbeaver/dbeaver/files/6473735/dbeaver-debug.log)