chore: rename NavigationHeader to NavHeader

[brenopolanski]

Summary

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #2169 into 3.0-react will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##           3.0-react     #2169    +/-   ##
============================================
  Coverage     100.00%   100.00%            
============================================
  Files             24       112    +88     
  Lines            142       884   +742     
  Branches          18       136   +118     
============================================
+ Hits             142       884   +742     

Flag	Coverage Δ
#unit	100.00% <100.00%> (?)

Impacted Files	Coverage Δ
src/app/components/Button/Button.tsx	100.00% <ø> (ø)
src/app/components/Card/Card.tsx	100.00% <ø> (ø)
src/app/components/Card/CardControl.tsx	100.00% <ø> (ø)
src/app/components/StepIndicator/StepIndicator.tsx	100.00% <ø> (ø)
src/app/components/Address/Address.tsx	100.00% <100.00%> (ø)
src/app/components/Address/utils.ts	100.00% <100.00%> (ø)
src/app/components/Alert/Alert.tsx	100.00% <100.00%> (ø)
src/app/components/Badge/Badge.styles.ts	100.00% <100.00%> (ø)
src/app/components/Badge/Badge.tsx	100.00% <100.00%> (ø)
src/app/components/Button/Button.styles.ts	100.00% <100.00%> (ø)
... and 143 more

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[faustbrian]

https://github.com/ArkEcosystem/desktop-wallet/blob/3.0-react/NAMING_CONVENTIONS.md

[faustbrian]

Closing this due to the violation of non-abbreviated and clear names in the naming conventions document. The router changes can be submitted in a separate PR if they are needed.