Still to do:
- [ ] Figure out why `ctrl-g` `ctrl-g` doesn't dismiss GoToLine (but
`cmd-shift-p` `cmd-shift-p` does dismiss Command). Likely to do with the
"Editor" context in the keymap, but this did used to work in gpui1.
- [ ] Fix first render with incorrect matches immediately flashes.
- [ ] Show keybindings
- [x] Figure out why `cmd-shift-p "go to line" enter` panics
- [ ] Fix the selected visuals
- [ ] Party hard
- [ ] Uncomment the tests