Allow json logs to occupy entire available width

[tejas-raskar]

Which problem is this PR solving?

• Resolves [Feature]: log JSON wrapping #2477

Description of the changes

• Displayed the copy actions in a floating container instead of a separate column, making the table simpler with only 2 columns
• Minimized the margin on the right
• This allowed the valueMarkup to take up the remaining space within the table

Before:

After:

How was this change tested?

• Tested the changes across different browser sizes
• Ran npm run lint and npm run test

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.03%. Comparing base (c4cfc67) to head (be11288).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2814   +/-   ##
=======================================
  Coverage   97.03%   97.03%           
=======================================
  Files         256      256           
  Lines        7947     7947           
  Branches     2003     2003           
=======================================
  Hits         7711     7711           
  Misses        236      236           

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[yurishkuro]

why is child syntax removed?

[tejas-raskar]

The copyContainer is now nested inside the second <td> and therefore is not a direct child of the row