fix(elevenlabs): stop recognize from mutating instance language

[rosetta-livekit-bot]

Summary

• Port the per-call STT language override side-effect fix from fix(clova): stop _recognize_impl from mutating instance language as a side effect agents#6097 to the equivalent agents-js STT implementation.
• Use a local language code for ElevenLabs STT recognize requests instead of mutating the instance options.
• Add a patch changeset for the ElevenLabs plugin.

Notes

• agents-js does not currently have a Clova plugin; the matching JS side effect is in ElevenLabs STT's #recognizeImpl.
• No tests added, matching the original fix.

Testing

• pnpm exec prettier --check "plugins/elevenlabs/src/stt.ts" ".changeset/odd-languages-speak.md"
• pnpm --filter @livekit/agents build
• pnpm --filter @livekit/agents-plugin-elevenlabs build

---

Ported from livekit/agents#6097

Original PR description

_recognize_impl accepted a per-call language override but wrote it back to self._language, permanently changing the instance's language for all subsequent calls that don't specify one.

Fix: compute a local lang variable from the per-call override (falling back to self._language), use it in the request payload, and pass it through to _transcription_to_speech_event so the response language also reflects the correct per-call value. self._language is now only ever mutated by __init__ and update_options.

Fixes #6096

[changeset-bot]

🦋 Changeset detected

Latest commit: ab8a55d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 35 packages

Name	Type
@livekit/agents-plugin-elevenlabs	Patch
@livekit/agents	Patch
@livekit/agents-plugin-anam	Patch
@livekit/agents-plugin-assemblyai	Patch
@livekit/agents-plugin-baseten	Patch
@livekit/agents-plugin-bey	Patch
@livekit/agents-plugin-cartesia	Patch
@livekit/agents-plugin-cerebras	Patch
@livekit/agents-plugin-deepgram	Patch
@livekit/agents-plugin-did	Patch
@livekit/agents-plugin-fishaudio	Patch
@livekit/agents-plugin-google	Patch
@livekit/agents-plugin-hedra	Patch
@livekit/agents-plugin-hume	Patch
@livekit/agents-plugin-inworld	Patch
@livekit/agents-plugin-lemonslice	Patch
@livekit/agents-plugin-liveavatar	Patch
@livekit/agents-plugin-livekit	Patch
@livekit/agents-plugin-minimax	Patch
@livekit/agents-plugin-mistral	Patch
@livekit/agents-plugin-mistralai	Patch
@livekit/agents-plugin-neuphonic	Patch
@livekit/agents-plugin-openai	Patch
@livekit/agents-plugin-perplexity	Patch
@livekit/agents-plugin-phonic	Patch
@livekit/agents-plugin-resemble	Patch
@livekit/agents-plugin-rime	Patch
@livekit/agents-plugin-runway	Patch
@livekit/agents-plugin-sarvam	Patch
@livekit/agents-plugin-silero	Patch
@livekit/agents-plugin-soniox	Patch
@livekit/agents-plugin-tavus	Patch
@livekit/agents-plugin-trugen	Patch
@livekit/agents-plugin-xai	Patch
@livekit/agents-plugins-test	Patch

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.