test: validate code based config is preferrred over env vars in trace BatchConfig

[gruebel]

Relates to #1225

Changes

• this finishes up SDK. there is the trace Config but all the methods were deprecated so not worth validating them

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.2%. Comparing base (a442d62) to head (cc633fb).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2809   +/-   ##
=====================================
  Coverage   80.2%   80.2%           
=====================================
  Files        123     123           
  Lines      23346   23375   +29     
=====================================
+ Hits       18731   18762   +31     
+ Misses      4615    4613    -2     

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

🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[cijothomas]

Relates to #1225

Changes

• this finishes up SDK. there is the trace Config but all the methods were deprecated so not worth validating them

Lets remove the deprecated methods too, since its been more than a release since they were deprecated?