Fix return type of ActiveRecord::QueryMethods#extract_associated

[bdewater]

Motivation

See https://api.rubyonrails.org/classes/ActiveRecord/QueryMethods.html#method-i-extract_associated - this returns an array and the return type unknown since it depends on the association passed in.

Implementation

Override when iterating over QUERY_METHODS to return the right thing seemed like the right place to hook into since it collects methods from the aforementioned Active Record module.

Tests

Updated tests.

[bdewater]

CI is failing on unrelated protobuf errors.

[KaanOzkan]

@bdewater can you rebase on latest main?

[bdewater]

@KaanOzkan CI is green now :)