refactor(tests): use consistent naming in table tests with the slice pattern

[mwbrooks]

Summary

This pull request standardizes the naming convention in table-driven tests that use the slice pattern across the codebase.

• Renames the loop variable from tt to tc (test case) in all table-driven tests using the slice pattern

Motivation

This is the first step in refactoring all of our Table Tests to use a consistent style. Right now, we have a mix of Slice and Map Patterns. This step attempts to use consistent naming patterns before we switch all Slice Pattern tests to be Map Pattern.

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[mwbrooks]

🧪 Tests are currently failing while an issue is resolved in our E2E QA/Dev environment (unrelated to this PR).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.91%. Comparing base (2853d95) to head (828cd92).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #315      +/-   ##
==========================================
- Coverage   64.97%   64.91%   -0.07%     
==========================================
  Files         212      212              
  Lines       17623    17623              
==========================================
- Hits        11451    11440      -11     
- Misses       5099     5105       +6     
- Partials     1073     1078       +5     

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[zimeg]

@mwbrooks What meticulous change!

IMHO these focused changes are bringing huge improvements to overall code health. Thanks so much for driving this 💌 ✨