Remove objc compatibility from TrackedLifecycleEvent since it's not exposed to objc.

[bsneed]

• Removed @objc from TrackedLifeCycleEvent since it's not exposed to objc.

[codecov]

Codecov Report

❌ Patch coverage is 70.00000% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.97%. Comparing base (a4c12ae) to head (e79829c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/Segment/Configuration.swift	70.00%	6 Missing ⚠️

❌ Your patch status has failed because the patch coverage (70.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #400      +/-   ##
==========================================
- Coverage   71.01%   70.97%   -0.05%     
==========================================
  Files          49       49              
  Lines        4920     4920              
==========================================
- Hits         3494     3492       -2     
- Misses       1426     1428       +2     

Files with missing lines	Coverage Δ
Sources/Segment/Configuration.swift	74.57% <70.00%> (ø)

... and 1 file with indirect coverage changes

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[bsneed]

will fix ci separately.