Pass custom data in email templates

[Sahil-Gupta584]

Bug report

• I confirm this is a bug with Supabase, not with my own application.
• I confirm I have searched the Docs, GitHub Discussions, and Discord.

Describe the bug

I have two use cases

1. when signup email gets triggered i want to attach a dynamic searchParam 'redirectTo' on signup link
2. When an org sends invite link to a user the invite link should containe some info through which i can identify from which org is this invite link

For 1st one:
when i pass emailRedirectTo (containig my searchParams ) while calling supabase.auth.signUp , the link i receive in the email fallbacks to siteUrl, because emailRdirectTo rejects my link string since it contains dynamic searchParams. if i dont pass search params then everything works fine

for 2nd:
i am sending invite email by calling supabase.auth.admin.inviteUserByEmail , supabse sends email perfectly , user visits the link, and reaches my website, but now i want to verify for which org is this invite link is for, so i can perform some db operations (adding the user in that org).

System information

• OS: [e.g. macOS, Windows]
• Browser (if applies) [e.g. chrome, safari]
• Version of supabase-js: [e.g. 6.0.2]
• Version of Node.js: [e.g. 10.10.0]

Additional context

Add any other context about the problem here.