[queryStrings] fix joinQueryStrings function

2 jobs for 213-dev-node-user in 0 seconds (queued for 96 minutes and 3 seconds)
Status Job ID Name Coverage
  Test
failed #7172
deps

failed #7173
test

 
Name Stage Failure
failed
test Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
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failed
deps Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
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