Removing tab with background_image is laggy

[Dsaquel]

Describe the bug
The image background don't show itself for a moment when removing tab.

To Reproduce
Steps to reproduce the behavior:

1. Add many tabs.
2. Remove one tab.
3. See that an background black take the first rendering instead of the background image.

Error gif:

Came from kitty 0.42.2 and it was fine.

minimal reproduction file, (i think any image should be able to reproduce the bug):

background_image /home/element/Pictures/illustrations/background_kitty.png
background_image_layout scaled

Environment details (ctrl + shift + F6)

kitty 0.43.1 (7f24dd68c9) created by Kovid Goyal
Linux element 6.14.0-33-generic #33~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Sep 19 17:02:30 UTC 2 x86_64
Ubuntu 24.04.3 LTS element /dev/tty
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=24.04
DISTRIB_CODENAME=noble
DISTRIB_DESCRIPTION="Ubuntu 24.04.3 LTS"
Running under: X11
OpenGL: '3.1.0 NVIDIA 535.247.01' Detected version: 3.1
Frozen: True
Fonts:
  medium: DejaVuSansMono: /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf:0
          Features: ()
    bold: DejaVuSansMono-Bold: /usr/share/fonts/truetype/dejavu/DejaVuSansMono-Bold.ttf:0
          Features: ()
  italic: DejaVuSansMono-Oblique: /usr/share/fonts/truetype/dejavu/DejaVuSansMono-Oblique.ttf:0
          Features: ()
      bi: DejaVuSansMono-BoldOblique: /usr/share/fonts/truetype/dejavu/DejaVuSansMono-BoldOblique.ttf:0
          Features: ()
Paths:
  kitty: /home/element/.local/kitty.app/bin/kitty
  base dir: /home/element/.local/kitty.app/lib/kitty
  extensions dir: /home/element/.local/kitty.app/lib/kitty-extensions
  system shell: /usr/bin/fish
System color scheme: no_preference. Applied color theme type: none
Loaded config files:
  ./issue.conf

Config options different from defaults:
background_image        /home/element/Pictures/illustrations/background_kitty.png
background_image_layout scaled

Important environment variables seen by the kitty process:
	PATH                                /home/element/.juliaup/bin:/home/element/go/bin:node_modules/.bin:/home/element/.n/bin:/home/element/.local/share/bob/nvim-bin:/home/element/.local/bin:/home/element/bin:bin:/home/element/.fzf/bin:/home/element/.local/kitty.app/bin:/home/element/.juliaup/bin:/home/element/.cargo/bin:/home/element/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:/home/element/.dotnet/tools
	LANG                                en_GB.UTF-8
	EDITOR                              nvim
	SHELL                               /usr/bin/fish
	DISPLAY                             :1
	USER                                element
	LC_IDENTIFICATION                   fr_FR.UTF-8
	LC_ADDRESS                          fr_FR.UTF-8
	LC_MEASUREMENT                      fr_FR.UTF-8
	LC_TIME                             fr_FR.UTF-8
	XDG_CURRENT_DESKTOP                 ubuntu:GNOME
	XDG_SESSION_TYPE                    x11
	XDG_CONFIG_DIRS                     /etc/xdg/xdg-ubuntu:/etc/xdg
	LC_NAME                             fr_FR.UTF-8
	LC_NUMERIC                          fr_FR.UTF-8
	LC_MONETARY                         fr_FR.UTF-8
	XDG_MENU_PREFIX                     gnome-
	XDG_SESSION_DESKTOP                 ubuntu
	XDG_SESSION_CLASS                   user
	XDG_DATA_DIRS                       /usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
	LC_PAPER                            fr_FR.UTF-8
	LC_TELEPHONE                        fr_FR.UTF-8
	XDG_RUNTIME_DIR                     /run/user/1000

Additional context
I tried only a background color and the bug didn't show up.

[lumynou5]

Just for more details:

This is a regression of #7999. It hapens when closing both windows and tabs by my test.