fix(compiler): correctly validate alias in order/group by clauses for joins

[andrewmbenton]

Resolves #1886
Resolves #2398
Resolves #2399

[andrewmbenton]

I think this resolves the referenced issues and pull request, but there is still a subtle bug (not new). The following query runs fine with psql but sqlc still gets confused even with the patch in this PR applied.

SELECT a.name AS name
FROM authors a JOIN authors b ON a.id = b.id
ORDER BY name;

Here's a playground link for v1.19.1: https://play.sqlc.dev/p/8648bbce740f0f059549e4e50e75bd073443080be5e5d12fd68aa5699f1b0c72

I think I'll create a new issue for this unless I can resolve it quickly.

[akutschera]

FWIW, let's merge this one instead of #2399. Just my 2c