Fix false positives for extractions in lambdas

[MichaelChirico]

Closes #2231

[codecov-commenter]

Codecov Report

Merging #2233 (cdaf327) into main (b49ee9d) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head cdaf327 differs from pull request most recent head 1698e8f. Consider uploading reports for the commit 1698e8f to get more accurate results

@@           Coverage Diff           @@
##             main    #2233   +/-   ##
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  Coverage   99.65%   99.65%           
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  Files         114      114           
  Lines        5175     5176    +1     
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+ Hits         5157     5158    +1     
  Misses         18       18           

Files	Coverage Δ
R/unnecessary_lambda_linter.R	100.00% <100.00%> (ø)