Large images are not saved by CopyQ

**Describe the bug**
When copying large images CopyQ does not "perceive" them and therefore does not "memorize" them in its history.

**To Reproduce**
Steps to reproduce the behavior:
1. Try to copy any image of a rather large size.
2. See that this image does not appear in the CopyQ history.

**Expected behavior**
Images of any size should be saved in CopyQ.

**Screenshots**

[CopyQ-Large-Images-Video_2023-10-27_144134.webm](https://github.com/hluk/CopyQ/assets/11407417/bf43d897-2a28-47eb-963f-99acd09ff81a)

**Version, OS and Environment**
- CopyQ 7.1.0
- OS: Microsoft Windows [Version 10.0.19045.2673] 64bit

**Additional context**
```
Warning [2023-10-27 14:36:48.058] : [default] QtWarning: QSystemTrayIcon::setVisible: No Icon set
Warning [2023-10-27 14:38:23.768] : ELAPSED 576 ms accessing "imageData"
Warning [2023-10-27 14:38:27.809] : ELAPSED 540 ms accessing "imageData"
Warning [2023-10-27 14:39:49.274] : [default] QtWarning: QSystemTrayIcon::setVisible: No Icon set
Warning [2023-10-27 14:40:27.322] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-10-27 14:40:27.981] : ELAPSED 564 ms accessing "imageData"
Warning [2023-10-27 14:40:28.846] : ELAPSED 706 ms accessing "imageData"
Warning [2023-10-27 14:40:32.607] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-10-27 14:40:33.390] : ELAPSED 663 ms accessing "imageData"
Warning [2023-10-27 14:40:34.219] : ELAPSED 589 ms accessing "imageData"
Warning [2023-10-27 14:40:55.379] : ELAPSED 765 ms accessing "imageData"
Warning [2023-10-27 14:41:10.085] : ELAPSED 627 ms accessing "imageData"
Warning [2023-10-27 14:43:21.400] : CopyQ server is already running.
Warning [2023-10-27 14:43:35.901] : [default] QtWarning: QSystemTrayIcon::setVisible: No Icon set
ERROR [2023-10-27 14:45:41.178] : ERROR: Socket disconnected before receiving message
ERROR [2023-10-27 14:45:48.522] : [] QtCritical: QWindowsPipeWriter: asynchronous write failed. (The pipe has been ended.)
ERROR [2023-10-27 14:48:19.059] : [] QtCritical: QWindowsPipeWriter: asynchronous write failed. (The pipe has been ended.)
Warning [2023-10-27 14:48:42.847] : [default] QtWarning: QSystemTrayIcon::setVisible: No Icon set
ERROR [2023-10-27 14:49:02.037] : ERROR: Socket disconnected before receiving message
Warning [2023-10-27 14:52:54.996] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-10-27 14:55:45.791] : [qt.qpa.fonts] QtWarning: Unable to enumerate family ' "Font Awesome 6 Free Solid (CopyQ)" '
Warning [2023-10-27 15:00:52.599] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-10-27 15:04:19.187] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.

```