Looser GUI editor handling in omarchy-launch-editor script (#1702)

* fix: Default to nvim if $EDITOR not set in omarchy-launch-editor

Refs: https://github.com/basecamp/omarchy/pull/1697/files#r2352727184

* fix: Handle $EDITOR as GUI application by default

If we do not definitively handle $EDITOR as a known TUI editor,
assume a GUI editor and launch without using the terminal.

Refs: https://github.com/basecamp/omarchy/pull/1697/files#r2352727184

bin/omarchy-launch-editor

@@ -1,13 +1,10 @@
 #!/bin/bash
 
-case "$EDITOR" in
+case "${EDITOR:-nvim}" in
 nvim | vim | nano | micro | hx)
   exec setsid uwsm app -- "$TERMINAL" -e "$EDITOR" "$@"
   ;;
-code | codium | subl | gedit | kate | zeditor)
+*)
   exec setsid uwsm app -- "$EDITOR" "$@"
   ;;
-*)
-  exec setsid uwsm app -- "$TERMINAL" -e nvim "$@"
-  ;;
 esac