Disable/hide close icon `x` in titles for tiled windows

[joelostblom]

(1) Issue/Bug Description:

It seems like there was a recent update to the appearance of the title bar for tiling windows, which introduce a close icon x. This icon is rather big and not very aesthetically pleasing, and since it is right aligned it looks like it belongs to the neighboring window which is a bit confusing as can be seen below:

(2) Steps to reproduce (if you know):

Enable tiled windows and open more than one

(3) Expected behavior:

I would expect there to be an option/config file to disable this close icon (like there is in i3).

(4) Distribution (run cat /etc/os-release):

NAME="Pop!_OS"
VERSION="22.04 LTS"
ID=pop
ID_LIKE="ubuntu debian"
PRETTY_NAME="Pop!_OS 22.04 LTS"
VERSION_ID="22.04"
HOME_URL="https://pop.system76.com"
SUPPORT_URL="https://support.system76.com"
BUG_REPORT_URL="https://github.com/pop-os/pop/issues"
PRIVACY_POLICY_URL="https://system76.com/privacy"
VERSION_CODENAME=jammy
UBUNTU_CODENAME=jammy
LOGO=distributor-logo-pop-os

(5) Gnome Shell version:

42.1

(6) Pop Shell version (run apt policy pop-shell or provide the latest commit if building locally):

1.1.0

(7) Where was Pop Shell installed from:

Came with system76 computer

(8) Monitor Setup (2 x 1080p, 4K, Primary(Horizontal), Secondary(Vertical), etc):

Single 1080p laptop

(9) Other Installed/Enabled Extensions:

(10) Other Notes: