Add Unit Tests for processCommitTimestamps Function

[tmdeveloper007]

Summary of What Has Been Done

Created a new test file utils/processCommitTimestamps.test.ts with comprehensive unit tests covering time bucket classification, empty arrays, invalid dates, null/undefined entries, and Date object inputs.

Changes Made

• Created utils/processCommitTimestamps.test.ts with 8 test cases

Impact it Made

• Prevents regressions in the time-of-day classification logic
• Documents expected behavior for contributors

Closes #8849

Note: Please assign this PR to the tmdeveloper007 account.

[retenta-bot]

This PR adds important unit tests for the processCommitTimestamps function, which will help in maintaining the integrity of the time-of-day classification logic. It builds on previous decisions regarding handling invalid dates, ensuring that our metrics remain accurate and reliable. Thank you for your contribution, and please let me know if you need any further assistance!

[Aamod007]

Great work adding comprehensive unit tests for the \processCommitTimestamps\ function! You've cleanly structured the test cases in \utils/processCommitTimestamps.test.ts\ using \�itest, thoroughly covering all time buckets (morning, afternoon, evening, night) as well as edge cases like empty arrays and invalid strings. The logic is easy to follow and handles null/undefined entries perfectly. Keep it up!