Convert opsGraph.tsx from class component to functional component

[Parship999]

Which problem is this PR solving?

• Resolves part of [Feature]: Refactor class components to functional components #2610

Description of the changes

• Converted the following components to functional components: opsGraph.tsx

Checklist

• I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• I have signed all commits
• I have added unit tests for the new functionality
• I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: npm run lint and npm run test

[graphite-app]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.57%. Comparing base (79767e3) to head (e4dd7c6).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2914      +/-   ##
==========================================
- Coverage   97.57%   97.57%   -0.01%     
==========================================
  Files         256      256              
  Lines        7967     7965       -2     
  Branches     2086     2085       -1     
==========================================
- Hits         7774     7772       -2     
  Misses        193      193              

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[vishvamsinh28]

LGTM!

cc : @yurishkuro could you also take a look ?