Modeline does not scale well

### What did you expect to happen?

When I scale the modeline to be very large, it should scale in proportion to the text it contains.

### What actually happened?

When I using `cmd-=` (`doom/increase-font-size`) and `cmd-`, (`doom/decrease-font-size`) to make things very large, the modeline takes a disproportionate size of the screen. I use such large fonts when projecting to an audience.

See the screenshot below


Notice that the height of the modeline is several times the height of the line it contains. Normally it looks more like 1.8 times or so.

### Describe your attempts to resolve the issue

_No response_

### Steps to reproduce

1. Open `emacs`
2. Press `cmd-=` a few times.

### System Information

https://pastebin.com/iwDHVTsz

Reproduce the issue in Emacs by opening it and using cmd-= (doom/increase-font-size) several times, then compare the modeline height with the text line. Trace the modeline implementation from the Doom Emacs configuration and identify what determines its scaling; done means the modeline remains proportionate at very large font sizes.

Written by the indexing model from the issue text.