fix: Display POH status as icons

[alainncls]

What does this PR do?

Replaces the POH status emojis by real icons for maximum compatibility across OSs and browsers

Type of change

• Chore
• Bug fix
• New feature
• Documentation update

Check list

• Unit tests for any smart contract change
• Contracts and functions are documented

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2e1164c) 93.63% compared to head (f3208f9) 93.63%.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #485   +/-   ##
=======================================
  Coverage   93.63%   93.63%           
=======================================
  Files          20       20           
  Lines         330      330           
  Branches       76       76           
=======================================
  Hits          309      309           
  Misses         10       10           
  Partials       11       11           

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