Allow `CopyQ` to be used if the browser loses focus during some renaming operations

**Describe the bug**

**To Reproduce**
1. Create or open your imdb list (page like `https://www.imdb.com/list/ls…/edit/`).
2. Add something to it.
3. Click "Add a note."
4. Activate the CopyQ paste dialog.
5. The input field will lose focus, editing mode will end, and the message "List item description was successfully updated" will appear.

**Expected behavior**
5. The input field will remain in focus and text can be inserted.

This is exactly how Windows Clipboard Manager behaves.

**Version, OS and Environment**
> Get details from `copyq version` command, or copy from the CopyQ main window:
> 1. Open Action dialog (F5 shortcut).
> 2. Enter command: `copyq: copy(version)`
> 3. Click OK - the details should be copied to the system clipboard.
> 4. Paste the details in the report.

It doesn't work. The buffer is empty after running the command.

```
[2025-11-07 11:45:19.890] Warning : [qt.qpa.mime] Retrying to obtain clipboard.
[2025-11-07 11:45:20.027] Warning : [qt.qpa.mime] Retrying to obtain clipboard.
[2025-11-07 11:45:56.076] Warning : [qt.qpa.mime] Retrying to obtain clipboard.
[2025-11-07 11:45:56.223] Warning : [qt.qpa.mime] Retrying to obtain clipboard.
[2025-11-07 11:46:02.682] Warning : [qt.qpa.mime] Retrying to obtain clipboard.
[2025-11-07 11:46:02.820] Warning : [qt.qpa.mime] Retrying to obtain clipboard.
```

- Application Version: 13.0.0
- OS: Microsoft Windows 10.0.26200.7019
- Mozilla Firefox 145.0 (64-bit)
- Installation method: `https://github.com/hluk/CopyQ/releases/download/v13.0.0/copyq-13.0.0.zip`