test: use request_mock for all clients tests

[jooola]

Similar to #536 but focused on the resources clients.

Pass request_mock directly to the test functions to configure the mocked HTTP requests. We do not want to update/modify protected properties (the mock object) within the client class.

Allows us to move the location of the client request function (that is mocked) in the future, without breaking the tests.

This also starts adding typing information to the tests, which should open the door for linting our test code as well.

A lot of the diff is from search and replaces and breaking the test arguments onto multiple lines.

This is the second patch of a larger set.

Based on top of #536

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.07%. Comparing base (d38772b) to head (72fa01a).
⚠️ Report is 48 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #537   +/-   ##
=======================================
  Coverage   96.07%   96.07%           
=======================================
  Files          64       64           
  Lines        2933     2933           
=======================================
  Hits         2818     2818           
  Misses        115      115           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.