Description of changes

This PR fixes a critical timestamp duplication issue in the DCA (Document Capture and Analysis) liveness detection feature that was causing video truncation.

Problem:

• Color sequences 0 and 1 were receiving identical timestamps
• This caused the video recording to be truncated at the first sequence transition
• The issue occurred because the transition check happened on the same tick as the initial sequence start

Solution:

• Skip the transition check on the first tick to ensure a minimum 10ms gap between sequence timestamps
• This guarantees unique timestamps for each color sequence
• Removed unused sequenceStartTime variables to pass linting

Changes:

• Modified ColorSequenceDisplay.ts to add #isFirstTick flag
• Skip transition logic on first tick, allowing time to elapse before next sequence
• Cleaned up unused variables and simplified #handleSequenceChange method

Issue #, if available

N/A - This fixes a regression in the DCA v2 liveness detection implementation

Description of how you validated changes

• ✅ Built packages successfully with no TypeScript errors
• ✅ Verified timestamp logic ensures minimum 10ms gap between sequences
• ✅ Linting passes with no unused variable warnings
• 🔄 Testing in DCA app to verify video recording captures all sequences

Checklist

• Have read the Pull Request Guidelines
• PR description included
• yarn test passes and tests are updated/added
• PR title and commit messages follow conventional commit syntax
• Changeset added (if version bump needed)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.