js: Return the new deadline error when running code

[mstoykov]

This was mistakenly broken in 7b5aaaa

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (43f10a0) 73.12% compared to head (d7aaba4) 73.08%.
Report is 3 commits behind head on master.

❗ Current head d7aaba4 differs from pull request most recent head 7e4a71c. Consider uploading reports for the commit 7e4a71c to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3399      +/-   ##
==========================================
- Coverage   73.12%   73.08%   -0.05%     
==========================================
  Files         258      256       -2     
  Lines       19642    19636       -6     
==========================================
- Hits        14363    14350      -13     
- Misses       4397     4399       +2     
- Partials      882      887       +5     

Flag	Coverage Δ
ubuntu	73.08% <40.00%> (+0.01%)	⬆️
windows	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
cloudapi/config.go	90.90% <100.00%> (ø)
js/runner.go	86.42% <50.00%> (+0.67%)	⬆️
js/modules/k6/grpc/client.go	82.74% <0.00%> (-0.64%)	⬇️

... and 11 files with indirect coverage changes

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