Types for join involving Computed Relationships do not work

[hmnd]

Bug report

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

Describe the bug

Resolving joins on Computed Relationships in types broke somewhere between v1.16.3 and v1.17.7, resulting in an error like: SelectQueryError<"could not find the relation between placement and hotel">.

To Reproduce

See src/supabase.test-d.ts in the working and broken branches of my repro repo: https://github.com/hmnd/postgrest-computed-rels-repro

Expected behavior

Computed Relationship is resolved successfully.