invert skip-mismatched in mask plugin

[DmitryRomanov]

invert skip-mismatched in mask plugin. now skip-mismatched = true disables mask performance features

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (0542b7a) 70.16% compared to head (36a8d23) 70.20%.

Files	Patch %	Lines
plugin/action/mask/mask.go	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #577      +/-   ##
==========================================
+ Coverage   70.16%   70.20%   +0.04%     
==========================================
  Files         112      112              
  Lines       11838    11838              
==========================================
+ Hits         8306     8311       +5     
+ Misses       3024     3020       -4     
+ Partials      508      507       -1     

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