macOS: Ctrl+L with Ergo-L keyboard layout doesn't produce a ctrl encoding

[mitchellh]

Steps to reproduce:

1. Install Ergo-L: https://ergol.org
2. Launch Ghostty
3. Run any keyboard input tracker, i.e. kitty +kitten show_key -m kitty (or any other)
4. Switch to Ergo-L
5. Ctrl+L (On US physical: Ctrl+H)

Notice the control key doesn't show up.

I've tracked this down to the code below, but this code exists for a reason. We should investigate why we do this, fix this, and ensure we don't regress the reason we did this in the first place.

ghostty/macos/Sources/Ghostty/SurfaceView_AppKit.swift

Lines 853 to 858 in c5508e7

	// This is a hack. libghostty on macOS treats ctrl input as not having
	// text because some keyboard layouts generate bogus characters for
	// ctrl+key. libghostty can't tell this is from an IM keyboard giving
	// us direct values. So, we just remove control.
	var modifierFlags = event.modifierFlags
	modifierFlags.remove(.control)