Use Default Browser with Vite --open on macOS

[theAdhocracy]

I have Firefox installed on macOS as my primary development browser. It is also my default browser, and the one that I expect to be used by tools, unless otherwise specified.

Currently, when I run something like vite --port 3000 --open on macOS, it loads the web server correctly, but then launches the site in any installed Chromium browser. This occurs even if no Chromium browsers are open, but other browsers are.

I'm aware that I can override this behaviour with e.g. BROWSER=open prefixed to my start command, but it just feels like the default behaviour should be to use the default browser, as registered in the OS, rather than picking the "nearest" Chromium option.