Let MBCS warning fall through the first time it's encountered

[MichaelChirico]

Closes #1920. Not an ideal solution but I'd rather just un-break our CI for now.

[codecov-commenter]

Codecov Report

Merging #1923 (d7ffa33) into main (27890d5) will decrease coverage by 0.02%.
The diff coverage is 83.33%.

❗ Current head d7ffa33 differs from pull request most recent head 9bc44b2. Consider uploading reports for the commit 9bc44b2 to get more accurate results

@@            Coverage Diff             @@
##             main    #1923      +/-   ##
==========================================
- Coverage   98.86%   98.84%   -0.02%     
==========================================
  Files         112      112              
  Lines        4852     4857       +5     
==========================================
+ Hits         4797     4801       +4     
- Misses         55       56       +1     

Impacted Files	Coverage Δ
R/extract.R	98.52% <83.33%> (-1.48%)	⬇️

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[IndrajeetPatil]

Thanks!

Yeah, I agree that we should resolve the CI/CD failure ASAP, and this is good enough to get there.