remove testFail from tests and prefer vm.expectRevert

[fedealconada]

• Refactors all testFail* tests to use expectRevert() or expectEmit() in the case of the tests that expect the UserOperationRevertReason event to be emitted.
• Also changed some test function method names
• Fixed very minor typos
• Added some helpers

[github-actions]

Slither report

THIS CHECKLIST IS NOT COMPLETE. Use --show-ignored-findings to show all the results.
Summary

• solc-version (1 results) (Informational)

solc-version

Impact: Informational
Confidence: High

• ID-0
  solc-0.8.17 is not recommended for deployment

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0cb5b1b) 67.31% compared to head (50904e5) 73.72%.
Report is 3 commits behind head on main.

❗ Current head 50904e5 differs from pull request most recent head 03ee289. Consider uploading reports for the commit 03ee289 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
+ Coverage   67.31%   73.72%   +6.41%     
==========================================
  Files          10       10              
  Lines         413      411       -2     
  Branches      114      113       -1     
==========================================
+ Hits          278      303      +25     
+ Misses         51       48       -3     
+ Partials       84       60      -24     

Files	Coverage Δ
src/wallet/KintoWallet.sol	72.17% <100.00%> (+9.56%)	⬆️
src/wallet/KintoWalletFactory.sol	73.91% <ø> (+9.32%)	⬆️

... and 5 files with indirect coverage changes