[v1.56.1] opentelemery: finish a span with an error if one is provided

[darccio]

What does this PR do?

Cherrypicks #2279

Reviewer's Checklist

• Changed code has unit tests for its functionality at or near 100% coverage.
• There is a benchmark for any new code, or changes to existing code.
• If this interacts with the agent in a new way, a system test has been added.

For Datadog employees:

• If this PR touches code that handles credentials of any kind, such as Datadog API keys, I've requested a review from @DataDog/security-design-and-guidance.
• This PR doesn't touch any of that.

Unsure? Have a question? Request a review!

[pr-commenter]

Benchmarks

Benchmark execution time: 2023-10-19 15:32:53

Comparing candidate commit 76c5918 in PR branch dario.castane/v1.56.1-otel with baseline commit 5781af2 in branch release-v1.56.x.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 40 metrics, 1 unstable metrics.

[epot]

I am subscribing to this :).