improve Legacy Contract tests

[AmadiMichael]

• DeployerWhitelist

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.77%. Comparing base (cc2715c) to head (f8d17df).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #13022      +/-   ##
===========================================
- Coverage    68.78%   66.77%   -2.02%     
===========================================
  Files           56       56              
  Lines         4665     4665              
===========================================
- Hits          3209     3115      -94     
- Misses        1274     1378     +104     
+ Partials       182      172      -10     

Flag	Coverage Δ
cannon-go-tests-32	61.85% <ø> (-2.02%)	⬇️
cannon-go-tests-64	56.72% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 8 files with indirect coverage changes

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles