feat(Steps): add inactive-color prop

[chenjiahan]

#6720

[codecov-commenter]

Codecov Report

Merging #6758 into dev will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev    #6758   +/-   ##
=======================================
  Coverage   91.03%   91.03%           
=======================================
  Files         175      175           
  Lines        4660     4664    +4     
  Branches      279      279           
=======================================
+ Hits         4242     4246    +4     
  Misses        379      379           
  Partials       39       39           

Impacted Files	Coverage Δ
src/steps/index.js	100.00% <ø> (ø)
src/step/index.js	100.00% <100.00%> (ø)
src/submit-bar/index.tsx	95.00% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c5d860d...c7e778f. Read the comment docs.