docs(repo): clarify changesets describe user-facing changes #29026

Job	Run time
Check Permissions	5s
Formatting \| Dedupe \| Changeset	51s
Build Packages	32s
Publish with pkg-pr-new	1m 5s
Static analysis	41s
Unit Tests (**)	30s
Unit Tests (**)	30s
Integration Tests (handshake:staging, chrome)	56s
Integration Tests (tanstack-react-start, chrome)	1m 25s
Integration Tests (machine, chrome)	54s
Integration Tests (chrome-extension, chrome)	1m 0s
Integration Tests (express, chrome)	59s
Integration Tests (generic, chrome)	54s
Integration Tests (nextjs, chrome, 16)	1m 37s
Integration Tests (vue, chrome)	54s
Integration Tests (fastify, chrome)	55s
Integration Tests (localhost, chrome)	56s
Integration Tests (nuxt, chrome)	59s
Integration Tests (custom, chrome)	54s
Integration Tests (quickstart, chrome, 15)	58s
Integration Tests (ap-flows, chrome)	1m 11s
Integration Tests (handshake, chrome)	54s
Integration Tests (sessions, chrome)	1m 37s
Integration Tests (quickstart, chrome, 16)	1m 4s
Integration Tests (astro, chrome)	54s
Integration Tests (billing, chrome)	54s
Integration Tests (cache-components, chrome, 16)	58s
Integration Tests (sessions:staging, chrome)	59s
Integration Tests (hono, chrome)	1m 9s
Integration Tests (nextjs, chrome, 15)	57s
Integration Tests (react-router, chrome)	1m 24s
	29m 36s

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