Fix signup issues

[kalilsn]

Fixes:

• Invite script was failing due to importing seed script
• Improved the invite flow to use the actual invite method in supabase rather than a password reset. This way seems to actually redirect to the community after setting a password!
• Fixes an issue preventing login with the all@pubpub.org user. But we probably shouldn't really use that user for testing any more since that's not how our real users (unjournal staff) are being created.

Test Plan

I'll send some invites to the team. And try signing in locally with the pubpub-all user after a reset and it should work.

Screenshots (if applicable)

Optional

Notes/Context/Gotchas

Supporting Docs

[3mcd]

Just tried to reset my password using the link in the email and got this:

No console errors, network errors (or requests for that matter) occur when the "Set new password" button is pressed.

Probably unrelated warnings in console:

[kalilsn]

@3mcd I think there's an error in the URL there, and it looks somewhat like the error that Jake reported to me - but how could it have expired already?

I checked in supabase and we have these emails set to expire after 24hours

[kalilsn]

@3mcd if you visit https://v7.pubpub.org/forgot does the new email from that work for you?