chore: Deprecate gen_ai.responses in favor of gen_ai.chat

[alexander-alderman-webb]

Description

For GenAI spans, the op is gen_ai. appended with the value of the gen_ai.operation.name attribute.
The responses literal was never a valid value for gen_ai.operation.name per OTel and our docs.

PR Checklist

• I have run yarn test and verified that the tests pass.
• I have run yarn generate to generate and format code and docs.

If an attribute was added:

• The attribute is in a namespace (e.g. nextjs.function_id, not function_id)
• I have used the correct value for apply_scrubbing (i.e. manual or auto. Use never only for values that should never be scrubbed such as IDs)

If an attribute was deprecated:

• I've followed the policies described in CONTRIBUTING.md

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Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

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New Features ✨

• (attributes) Add http.request.duration by loewenheim in #697
• (names) Add queue.publish/create/receive/process/settle to messaging span names by pabloDeputter in #705
• (ops) Add object.copy op by pabloDeputter in #706
• Add view.render op by alexander-alderman-webb in #699

Bug Fixes 🐛

• (attributes) Apply consistent scrubbing across deprecations by mjq in #692

Internal Changes 🔧

• (repo) Update CODEOWNERS to include @giortzisg by Lms24 in #708

• Deprecate gen_ai.responses in favor of gen_ai.chat by alexander-alderman-webb in #703

• Add deprecated messaging ops set by the Python SDK by alexander-alderman-webb in #693
• Add view.response.render op, deprecated in favor of view.render by alexander-alderman-webb in #700
• Add event.django op, deprecated in favor of function by alexander-alderman-webb in #698

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_{🤖 This preview updates automatically when you update the PR.}

[Lms24]

l: would make sense to add a "note" to the deprecation in this case, since it's not super obvious. wdyt?

[alexander-alderman-webb]

yes added a note.
It's unfortunate that we have this invariant (op is gen_ai.* + gen_ai.operation.name) but never enforce it.

[Lms24]

It's unfortunate that we have this invariant (op is gen_ai.* + gen_ai.operation.name) but never enforce it.

we could probably add a test for this, wdyt?

[alexander-alderman-webb]

I wrote a test that encodes: every gen_ai.* op must be deprecated or have a corresponding gen_ai.operation.name.

Unfortunately, the test fails. I created an issue to track: #709