Reset drawer onboarding flag

[vase4kin]

So everyone can see theme setting available in drawer

[codecov]

Codecov Report

Merging #312 into dev will not change coverage by %.
The diff coverage is n/a.

@@            Coverage Diff            @@
##                dev     #312   +/-   ##
=========================================
  Coverage     71.41%   71.41%           
  Complexity     1887     1887           
=========================================
  Files           317      317           
  Lines          6098     6098           
  Branches        763      763           
=========================================
  Hits           4355     4355           
  Misses          983      983           
  Partials        760      760           

Impacted Files	Coverage Δ	Complexity Δ
...in/teamcityapp/onboarding/OnboardingManagerImpl.kt	92.00% <ø> (ø)	21.00 <0.00> (ø)

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