fix(instrumentation-dataloader): support ESM imports of dataloader module

[brianphillips]

NB: code change primarily comes from #2813 and relates to #1942.

Which problem is this PR solving?

• This allows ESM applications to successfully import (vs. require) the dataloader package while instrumenting via otel

Short description of the changes

• Allows for default export to be nested inside the imported object instead of assuming its at the root level

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 89.83%. Comparing base (ef59c8d) to head (694c51d).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../instrumentation-dataloader/src/instrumentation.ts	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2973      +/-   ##
==========================================
- Coverage   89.84%   89.83%   -0.01%     
==========================================
  Files         188      188              
  Lines        9282     9288       +6     
  Branches     1903     1905       +2     
==========================================
+ Hits         8339     8344       +5     
- Misses        943      944       +1     

Files with missing lines	Coverage Δ
.../instrumentation-dataloader/src/instrumentation.ts	98.12% <87.50%> (-0.58%)	⬇️

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[raphael-theriault-swi]

Thank you for picking this up and adding the test !

[pichlermarc]

looks good, thanks! :)