meta: update type map

[github-actions]

Updates the type map

cc @nodejs/web-infra

Check this workflow's logs at https://github.com/nodejs/doc-kit/actions/runs/25977032549.

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Project	Deployment	Actions	Updated (UTC)
api-docs-tooling	Ready	Preview	May 17, 2026 0:37am

[cursor]

PR Summary

Low Risk
Single metadata map entry with no runtime or security impact.

Overview
Adds audioplaybackstats to the MDN type map in mdn.json, pointing at the AudioPlaybackStats Web API doc so metadata generation can link that type name to MDN like the other audio-related entries.

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