icat crashes kitty while trying to display large number of pictures

### Output of kitty --version
kitty 0.14.2 created by Kovid Goyal

### Description

As in the title, after trying to display large number of files, kitty displays some of them, and then crashes.

### Reproduction

1. Clone https://github.com/boyEstrogen/Anime-Girls-Holding-Programming-Books
2. call kitty +kitten icat \*\*/\*
3. Should crash after a while.