fix(ci): run tests for common-ts

[smartcontracts]

Description
Tests for common-ts were not being executed in CI because the command being triggered was "yarn test:coverage" and this command was a noop for common-ts. Also fixes a bug in the tests that wasn't caught by CI because of this.

Metadata

• Fixes common-ts unit test failed #5214

[changeset-bot]

⚠️ No Changeset found

Latest commit: 33d10cd

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[roninjin10]

I always find things like this that are broken for long periods of time without anybody noticing very amusing

[roninjin10]

Here is the ci run btw for anyone else reviewing https://app.circleci.com/pipelines/github/ethereum-optimism/optimism/15517/workflows/e0094126-1dd0-49dd-91cc-a579e2344011/jobs/547644

[mergify]

This PR has been added to the merge queue, and will be merged soon.

[mergify]

This PR is next in line to be merged, and will be merged as soon as checks pass.

[codecov]

Codecov Report

Merging #5220 (33d10cd) into develop (822f588) will decrease coverage by 0.08%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5220      +/-   ##
===========================================
- Coverage    41.24%   41.17%   -0.08%     
===========================================
  Files          306      295      -11     
  Lines        21569    20554    -1015     
  Branches       603      350     -253     
===========================================
- Hits          8897     8463     -434     
+ Misses       12004    11423     -581     
  Partials       668      668              

Flag	Coverage Δ
bedrock-go-tests	37.71% <ø> (+0.02%)	⬆️
common-ts-tests	26.82% <ø> (?)
contracts-tests	98.86% <ø> (ø)
core-utils-tests	60.41% <ø> (ø)
dtl-tests	47.15% <ø> (ø)
fault-detector-tests	33.88% <ø> (ø)
sdk-tests	?

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see 35 files with indirect coverage changes