Check for existing issues

• Completed

Describe the feature

Subpixel positioning of text seems to work (well enough) in the main text buffers of Zed, but not in in the terminal (I marked gaps in text due to presumably missing subpixel positioning below with red marks -- left is a normal buffer, right is a terminal). It would be nice to have consistent text rendering in all views :)

Zed Version and System Specs

Zed: v0.166.1 (Zed)
OS: Linux Wayland fedora 41
Memory: 15.5 GiB
Architecture: x86_64
GPU: AMD Radeon RX 6600 (RADV NAVI23) || radv || Mesa 24.2.8

I'm using GNOME with fractional scaling of 1.5x if it matters.

If applicable, add mockups / screenshots to help present your vision of the feature