Panic when Edits the current line in the $EDITOR program

[Renkai]

Summary

After I set hx as the default editor in zsh, I got panic when trying to edit the command with ctrl-x ctrl-e

Reproduction Steps

I tried this:

1. export EDITOR='hx' in ~/.zshrc
2. ctrl-x ctrl-e in my terminal

I expected this to happen:
Helix opened, put what I already typed in the terminal into buffer.

Instead, this happened:

➜  ~ thread 'main' panicked at 'reader source not set', /Users/brew/Library/Caches/Homebrew/cargo_cache/registry/src/github.com-1ecc6299db9ec823/crossterm-0.26.1/src/event/read.rs:38:30
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Helix log

~/.cache/helix/helix.log

2023-04-13T13:34:40.867 helix_vcs [ERROR] Error {
    context: "failed to open git repo",
    source: Discover(
        NoGitRepository {
            path: "/private/tmp",
        },
    ),
}
2023-04-13T13:34:40.867 helix_vcs [ERROR] failed to open diff base for /private/tmp/zshtIXKYX
2023-04-13T13:34:40.867 helix_vcs [ERROR] Error {
    context: "failed to open git repo",
    source: Discover(
        NoGitRepository {
            path: "/private/tmp",
        },
    ),
}
2023-04-13T13:34:40.867 helix_vcs [ERROR] failed to obtain current head name for /private/tmp/zshtIXKYX```

</details>


### Platform

macOS

### Terminal Emulator

wezterm

### Helix Version

helix 23.03

[archseer]

Probably the tty issue on macOS: #5468