Fix inverted active line of vertical QSlider

[5yutan5]

This pr fix #211.

[codecov[bot]]

Codecov Report

Merging #212 (0a68099) into main (1097123) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #212   +/-   ##
=======================================
  Coverage   98.37%   98.38%           
=======================================
  Files          39       39           
  Lines        1418     1422    +4     
=======================================
+ Hits         1395     1399    +4     
  Misses         23       23           

Impacted Files	Coverage Δ
qdarktheme/_resources/_template_stylesheet.py	100.00% <ø> (ø)
qdarktheme/widget_gallery/_ui/widgets_ui.py	100.00% <100.00%> (ø)

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