Avoid changing a correct order of span references

[sherwoodwang]

Which problem is this PR solving?

• Resolves [Bug]: The CHILD_OF span reference is moved to the second place incorrectly #5122

Description of the changes

• Avoid changing order in the case described above.

How was this change tested?

• A test case is added.

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: yarn lint and yarn test

[yurishkuro]

please use descriptive PR title

[sherwoodwang]

please use descriptive PR title

done

[yurishkuro]

looks reasonable, thanks

[github-actions]

Test Results

2 076 tests  +1   2 066 ✅ +1   1m 9s ⏱️ ±0s
  216 suites ±0      10 💤 ±0 
    1 files   ±0       0 ❌ ±0 

Results for commit 8682066. ± Comparison against base commit 88efe47.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (88efe47) 95.62% compared to head (8682066) 95.60%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5121      +/-   ##
==========================================
- Coverage   95.62%   95.60%   -0.03%     
==========================================
  Files         322      322              
  Lines       18454    18454              
==========================================
- Hits        17647    17643       -4     
- Misses        649      651       +2     
- Partials      158      160       +2     

Flag	Coverage Δ
cassandra-3.x	25.58% <0.00%> (ø)
cassandra-4.x	25.58% <0.00%> (ø)
elasticsearch-5.x	19.87% <0.00%> (ø)
elasticsearch-6.x	19.87% <0.00%> (ø)
elasticsearch-7.x	20.00% <0.00%> (ø)
elasticsearch-8.x	20.08% <0.00%> (-0.02%)	⬇️
grpc-badger	19.51% <0.00%> (ø)
kafka	14.09% <0.00%> (ø)
opensearch-1.x	19.99% <0.00%> (ø)
opensearch-2.x	20.00% <0.00%> (ø)
unittests	93.29% <100.00%> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.