[Fix]: make reset icon in SDG more intuitive

[hari45678]

Which problem is this PR solving?

• part of DAG View Improvements #2699

Description of the changes

• Make the Reset icon more intuitive

How was this change tested?

• Manually, Unit tests

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 96.78%. Comparing base (9938e2d) to head (4b0d9fa).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2723   +/-   ##
=======================================
  Coverage   96.78%   96.78%           
=======================================
  Files         256      256           
  Lines        7934     7938    +4     
  Branches     2042     2045    +3     
=======================================
+ Hits         7679     7683    +4     
  Misses        254      254           
  Partials        1        1           

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[yurishkuro]

Make the Reset icon more intuitive

what does "more intuitive" mean specifically, can you elaborate? Screenshots?

[hari45678]

The reset button was previously an icon but it now looks like

Also, we were not allowed to erase/delete the Max Depth input. That is now allowed,
For example, a user wants to focus on a service but doesn't want a max depth (basically wants to view the whole graph). Now this behavior is supported. Previously, they were required to have some number in max depth field

The "reload" icon to unset focal service is not very intuitive. Maybe add a Reset button instead. Also allow erasing the depth value

This is from the comment #2691 (review)