test: Add unit tests for str.contains_any and str.replace_many

[henryharbeck]

Was going to pick up #17220 and noticed there were no tests for these two methods. Good to add tests first before making any changes.

I've only included tests that conform to more strict Series function signature, so that the Series and Expression methods can be tested together. I'm unsure if the Expression function signature is intentionally more lax than the Series counterpart. The expression methods also give some unexpected results IMO (I raised #17863 for this).

In terms of the PR - I tried to test a good variety of input types and combinations, but let me know if this is overboard.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.46%. Comparing base (4275808) to head (0906fee).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #17961      +/-   ##
==========================================
+ Coverage   80.36%   80.46%   +0.10%     
==========================================
  Files        1494     1494              
  Lines      196452   196480      +28     
  Branches     2817     2817              
==========================================
+ Hits       157869   158090     +221     
+ Misses      38063    37870     -193     
  Partials      520      520              

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

[alexander-beedie]

Very nice; additional test coverage is always welcome!