fix: adjust otel_metric_producer callbacks

[javiergarea]

Updated callback typespec to match actual callback module invocations.

[linux-foundation-easycla]

• ✅login: javiergarea / (667762f)

The committers listed above are authorized under a signed CLA.

[tsloughter]

Thanks!

[tsloughter]

Can you sign the CLA?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.19%. Comparing base (d1e392b) to head (667762f).
⚠️ Report is 277 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #756   +/-   ##
=======================================
  Coverage   73.19%   73.19%           
=======================================
  Files          64       64           
  Lines        1940     1940           
=======================================
  Hits         1420     1420           
  Misses        520      520           

Flag	Coverage Δ
api	69.90% <ø> (ø)
elixir	17.32% <ø> (ø)
erlang	74.51% <ø> (ø)
exporter	73.06% <ø> (ø)
sdk	77.30% <ø> (ø)
zipkin	54.16% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ 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.

[javiergarea]

Can you sign the CLA?

Sure!