fix: rm terminalLink.isSupported checks

[mmkal]

They're not needed - the terminal-link package checks this internally and formats the URL using parentheses and zero-width spaces. As it is the logic is dropping the URL in terminals like VSCode's/Cursor's terminal.

Can't rely on terminal-link as-is, though, because of sindresorhus/terminal-link#18

I set the fallback to be ${text} ( ${url} ) (i.e. using regular spaces instead of zero-width, because many UIs include the trailing zero-width space which breaks the URL clickability/copyability - see the long list of references on that issue, from redwood, shopify cli, warp etc. etc.)

I'm not familiar with terminal-link and unilaterally changing zero-width space to regular space could be a significant UI change, so I figured it's safer to sacrifice aesthetics for functionality just in the case of np.

[sindresorhus]

Can't rely on terminal-link as-is, though, because of sindresorhus/terminal-link#18

That issue has been fixed.

[mmkal]

@sindresorhus correct me if I'm wrong, but it looks like the fix came in terminal link v5 which requires node 20. I don't want to add to the scope of this PR to make it a breaking change, so pushed a change to keep the explicitly-specified fallback, but made it mimic the v5 behaviour so it should be smooth to update terminal-link when that does happen.