cover case where sequencing_request does not have lane

[sabrine33]

Closes #

Changes proposed in this pull request

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.31%. Comparing base (f0f334a) to head (e93a109).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5861      +/-   ##
===========================================
- Coverage    87.37%   87.31%   -0.06%     
===========================================
  Files         1480     1480              
  Lines        33637    33639       +2     
  Branches      3573     3574       +1     
===========================================
- Hits         29390    29373      -17     
- Misses        4226     4245      +19     
  Partials        21       21              

Flag	Coverage Δ
javascript	76.31% <ø> (ø)
ruby	87.33% <100.00%> (-0.06%)	⬇️

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