feat(ui): add Mosaic Avatar component #31513

Job	Run time
Check Permissions	10s
Build Packages	33s
Formatting \| Dedupe \| Changeset	58s
Publish with pkg-pr-new	1m 9s
Static analysis	2m 1s
Unit Tests (**)	3m 2s
Unit Tests (**)	3m 6s
Bundle size	44s
Integration Tests (sessions:staging, chrome)	2m 35s
Integration Tests (localhost, chrome)	1m 45s
Integration Tests (ap-flows, chrome)	2m 15s
Integration Tests (handshake, chrome)	1m 21s
Integration Tests (express, chrome)	1m 52s
Integration Tests (sessions, chrome)	2m 30s
Integration Tests (fastify, chrome)	1m 47s
Integration Tests (machine, chrome)	6m 23s
Integration Tests (nextjs, chrome, 15)	6m 49s
Integration Tests (billing, chrome)	4m 18s
Integration Tests (handshake:staging, chrome)	1m 12s
Integration Tests (custom, chrome)	2m 8s
Integration Tests (electron, chrome)	1m 51s
Integration Tests (vue, chrome)	1m 53s
Integration Tests (astro, chrome)	2m 40s
Integration Tests (tanstack-react-start, chrome)	1m 51s
Integration Tests (quickstart, chrome, 15)	2m 20s
Integration Tests (hono, chrome)	1m 41s
Integration Tests (react-router, chrome)	2m 0s
Integration Tests (nuxt, chrome)	2m 21s
Integration Tests (generic, chrome)	6m 24s
Integration Tests (nextjs, chrome, 16)	6m 36s
Integration Tests (quickstart, chrome, 16)	2m 17s
Integration Tests (cache-components, chrome, 16)	1m 47s
Integration Tests (chrome-extension, chrome)	1m 51s
	1h 22m 10s

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