detect !inner in one-to-one relationships

[wyozi]

What kind of change does this PR introduce?

Select query type parser feature/bugfix

What is the current behavior?

.select("a_onetoone_rel!inner(*)")

results in a nullable a_onetoone_rel, while it should be non-nullable due to !inner

What is the new behavior?

Detects this case and removes nullability of the inner one-to-one relationship.

Additional context

non one-to-one case was fixed in #458

[wyozi]

@steve-chavez this would be good to have merged, since otherwise https://github.com/supabase/postgrest-js/pull/458 will behave very unexpectedly with !inner randomly not working on one-on-one relationships

[github-actions[bot]]

:tada: This PR is included in version 1.15.5 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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