[Instrumentation.AspNet] Improve enrich methods

[Kielek]

Fixes #766

Changes

Instrumentation.AspNet - Improve enrich methods. It propagates what we have in stable AspNetCore package.

For significant contributions please make sure you have completed the following items:

• Appropriate CHANGELOG.md updated for non-trivial changes
• [ ] Design discussion issue #
• Changes in public API reviewed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.13%. Comparing base (71655ce) to head (ccc0819).
Report is 265 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1824      +/-   ##
==========================================
+ Coverage   73.91%   79.13%   +5.22%     
==========================================
  Files         267      115     -152     
  Lines        9615     2991    -6624     
==========================================
- Hits         7107     2367    -4740     
+ Misses       2508      624    -1884     

Flag	Coverage Δ
unittests-Solution	79.13% <ø> (?)

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see 258 files with indirect coverage changes

[cijothomas]

would be nice to change this tag to something else, as exception.type would be already covered by the instrumentation library, following the otel semantic convention!
Not a blocker, as we need to do it (if we chose to), for other instrumentation too.

[Kielek]

Created separate iisue: #1828

[CodeBlanch]

Seems like a problem was introduced here: https://github.com/open-telemetry/opentelemetry-dotnet-contrib/actions/runs/9180095969/job/25244103909?pr=1827#step:6:11

Interesting the ci didn't run these tests.