fix: correct the collapse-borderless class variable

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Codecov Report

Merging #20718 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #20718   +/-   ##
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  Coverage   97.47%   97.47%           
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  Files         296      296           
  Lines        6863     6863           
  Branches     1905     1906    +1     
=======================================
  Hits         6690     6690           
  Misses        173      173

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[afc163]

需要补充一下。