support ExtendedOpenTelemetry in GlobalOpenTelemetry

[zeitlinger]

Follow up to #7496

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.15%. Comparing base (2c379c7) to head (d223ebe).

Files with missing lines	Patch %	Lines
...ator/internal/ObfuscatedExtendedOpenTelemetry.java	33.33%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7799      +/-   ##
============================================
- Coverage     90.16%   90.15%   -0.01%     
- Complexity     7202     7205       +3     
============================================
  Files           816      817       +1     
  Lines         21737    21757      +20     
  Branches       2130     2131       +1     
============================================
+ Hits          19599    19615      +16     
- Misses         1468     1472       +4     
  Partials        670      670              

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[zeitlinger]

@jack-berg we missed that in the last PR on extended open telemetry

[jack-berg]

Nice catch. Thanks!

[jack-berg]

#nit: I think we should consider moving the logic from IncubatingUtil.obfuscatedOpenTelemetry into GlobalOpenTelemetry. Its a bit jarring to see code that looks like it will be using incubating code even when the incubator is not present. Also allows the standard ObfuscatedOpenTelemetry class to stay put here. It looks like its incubating when it lives as an inner class of IncubatingUtil.