Add detailed failure attributes to exporter send_failed metrics

[iblancasa]

Description

• Added error.type and error.permanent attributes in detailed mode to otelcol_exporter_send_failed_<signal> metrics

Suggested here #13957 (comment)

Link to tracking issue

Fixes #13956

[codspeed-hq]

Merging this PR will improve performance by 31.9%

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 7 improved benchmarks
✅ 54 untouched benchmarks
⏩ 20 skipped benchmarks¹

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	with_a_new_value	60 ns	46 ns	+30.43%
⚡	BenchmarkProfilesToProto	1.7 µs	1.3 µs	+31.9%
⚡	with_an_existing_value	60 ns	46 ns	+30.43%
⚡	with_a_duplicate_value	60 ns	46 ns	+30.43%
⚡	BenchmarkTraceSizeSpanCount	60 ns	46 ns	+30.43%
⚡	BenchmarkMetricsToProto2k	91.3 µs	72.6 µs	+25.79%
⚡	BenchmarkTracesMarshalJSON	6 µs	4.8 µs	+25.2%

---

_{Comparing iblancasa:13956-2 (3d2cf44) with main (77ffe4a)}

Footnotes

1. 20 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[codecov]

Codecov Report

❌ Patch coverage is 95.12195% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.85%. Comparing base (77ffe4a) to head (3d2cf44).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...orter/exporterhelper/internal/obs_report_sender.go	91.30%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #14247   +/-   ##
=======================================
  Coverage   91.84%   91.85%           
=======================================
  Files         677      677           
  Lines       42699    42727   +28     
=======================================
+ Hits        39219    39247   +28     
+ Misses       2425     2424    -1     
- Partials     1055     1056    +1     

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[axw]

@iblancasa I think this is a good direction, left a handful of suggestions

[iblancasa]

Sorry for the force-push but I got some issues with the CI after merging main into my branch and noticed some of them were related to the merge.

[axw]

Sorry for the delay, I thought I had hit send already

[axw]

LGTM, thanks for bearing with me @iblancasa!

[dmathieu]

The test failures look like issues due to this PR.

[iblancasa]

@open-telemetry/collector-maintainers can we merge this?

[iblancasa]

@open-telemetry/collector-maintainers I have some approvals for this PR. Can we merge it?