WRR-5248: Convert ThemeDecorator to functional component

[adrian-cocoara-lgp]

Checklist

• I have read and understand the contribution guide
• A CHANGELOG entry is included
• At least one test case is included for this feature or bug fix
• Documentation was added or is not needed
• This is an API breaking change

Issue Resolved / Feature Added

Migrated ThemeDecorator to functional component

Resolution

Removed class extends React.Component
Replaced componentDidMount and componentWillUnmount with useEffectHook

Additional Considerations

Links

WRR-5248

Comments

[codecov]

Codecov Report

Attention: Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.

Project coverage is 81.59%. Comparing base (5a4fd0d) to head (cf6ac19).

Files with missing lines	Patch %	Lines
ThemeDecorator/ThemeDecorator.js	90.90%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1712      +/-   ##
===========================================
- Coverage    81.59%   81.59%   -0.01%     
===========================================
  Files          148      148              
  Lines         6677     6676       -1     
  Branches      1987     1987              
===========================================
- Hits          5448     5447       -1     
  Misses         936      936              
  Partials       293      293              

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