Crash when using icat with --image-id

[musjj]

Describe the bug
Trying to replace an existing icated gif image with --image-id can make kitty crash.

To Reproduce
Steps to reproduce the behavior:

cd $(mktemp -d)
curl -o animated.gif 'https://upload.wikimedia.org/wikipedia/commons/2/2c/Rotating_earth_%28large%29.gif'
curl -o still.jpg 'https://upload.wikimedia.org/wikipedia/commons/8/8e/Blender_2.45_screenshot.jpg'
kitty +kitten icat --image-id 1 animated.gif
kitty +kitten icat --image-id 1 still.jpg

Environment details

kitty 0.28.1 (07bcc5ba61) created by Kovid Goyal
Linux username 6.2.13-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 26 Apr 2023 20:50:14 +
0000 x86_64
Arch Linux 6.2.13-arch1-1 (/dev/tty)

Running under: X11
Frozen: True
Paths:
  kitty: /home/username/.local/kitty.app/bin/kitty
  base dir: /home/username/.local/kitty.app/lib/kitty
  extensions dir: /home/username/.local/kitty.app/lib/kitty-extensions
  system shell: /bin/zsh
Loaded config files:
  /home/username/.config/kitty/kitty.conf

Config options different from defaults:
allow_remote_control      yes
copy_on_select            clipboard
cursor_blink_interval     0.0
enable_audio_bell         False
enabled_layouts           ['splits']
font_family               JetBrains Mono
font_size                 10.0
listen_on                 unix:/tmp/kitty
modify_font:
    underline_position 125%
    underline_thickness 150%
scrollback_pager          ['kitty-pager', 'INPUT_LINE_NUMBER', 'CURSOR_LINE', '
CURSOR_COLUMN']
show_hyperlink_targets    True
symbol_map:
        U+23fb - U+23fe → JetBrainsMono Nerd Font
        U+2665 - U+2665 → JetBrainsMono Nerd Font
        U+26a1 - U+26a1 → JetBrainsMono Nerd Font
        U+2b58 - U+2b58 → JetBrainsMono Nerd Font
        U+e000 - U+e00a → JetBrainsMono Nerd Font
        U+e0a0 - U+e0a3 → JetBrainsMono Nerd Font
        U+e0b0 - U+e0d4 → JetBrainsMono Nerd Font
        U+e200 - U+e2a9 → JetBrainsMono Nerd Font
        U+e300 - U+e3e3 → JetBrainsMono Nerd Font
        U+e5fa - U+e6aa → JetBrainsMono Nerd Font
        U+e700 - U+e7c5 → JetBrainsMono Nerd Font
        U+ea60 - U+ebeb → JetBrainsMono Nerd Font
        U+f000 - U+f2e0 → JetBrainsMono Nerd Font
        U+f300 - U+f32f → JetBrainsMono Nerd Font
        U+f400 - U+f4a9 → JetBrainsMono Nerd Font
        U+f500 - U+f8ff → JetBrainsMono Nerd Font
        U+f0001 - U+f1af0 → JetBrainsMono Nerd Font
text_composition_strategy 1.0 18
update_check_interval     0.0
url_style                 1
window_padding_width      FloatEdges(left=15.0, top=10.0, right=10.0, bottom=0)
Added shortcuts:
        ctrl+shift+space →  launch --stdin-add-formatting --type overlay --stdi
n-source=@screen_scrollback kitty-pager
Colors:
        active_border_color       #2b2d36   
        background                #0d0f18   
        bell_border_color         #ecd3a0   
        color0                    #4a4f71   
        color1                    #dd6777   
        color10                   #95d3af   
        color11                   #f1d8a5   
        color12                   #8baff1   
        color13                   #c79bf0   
        color14                   #98d3ee   
        color15                   #d0d3d8   
        color2                    #90ceaa   
        color3                    #ecd3a0   
        color4                    #86aaec   
        color5                    #c296eb   
        color6                    #93cee9   
        color7                    #cbced3   
        color8                    #4a4f71   
        color9                    #e26c7c   
        cursor                    #cbced3   
        cursor_text_color         #a5b6cf   
        foreground                #a5b6cf   
        inactive_border_color     #2b2d36   
        selection_background      #1c1e27   
        selection_foreground      #a5b6cf   
        url_color                 #93cee9   

Important environment variables seen by the kitty process:
        PATH                                /usr/local/sbin:/usr/local/bin:/usr
/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:

Additional context
Reproducible with kitty --config NONE