feat: use-sync-external-store

[dai-shi]

This PR uses https://www.npmjs.com/package/use-sync-external-store instead of useMutableSource emulation (useSubscription equivalent). It works both on React 18 and pre-18.

While it doesn't give much difference (technically, it prevents tearing on mount, that's it), and it doesn't change api / behavior, it's a non-trivial change with a new dependency.

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[github-actions]

Size Change: -2.85 kB (-6%) ✅

Total Size: 48.9 kB

Filename	Size	Change
dist/esm/index.js	786 B	-573 B (-42%)	🎉
dist/index.js	868 B	-573 B (-40%)	🎉
dist/system/index.development.js	967 B	-588 B (-38%)	🎉
dist/system/index.production.js	584 B	-290 B (-33%)	🎉
dist/umd/index.development.js	1.01 kB	-541 B (-35%)	🎉
dist/umd/index.production.js	709 B	-281 B (-28%)	🎉

ℹ️ View Unchanged

Filename	Size
dist/esm/macro.js	613 B
dist/esm/macro/vite.js	697 B
dist/esm/utils.js	4.04 kB
dist/esm/vanilla.js	1.85 kB
dist/macro.js	910 B
dist/macro/vite.js	982 B
dist/system/macro.development.js	721 B
dist/system/macro.production.js	556 B
dist/system/macro/vite.development.js	828 B
dist/system/macro/vite.production.js	653 B
dist/system/utils.development.js	4.26 kB
dist/system/utils.production.js	2.88 kB
dist/system/vanilla.development.js	1.97 kB
dist/system/vanilla.production.js	1.25 kB
dist/umd/macro.development.js	1.06 kB
dist/umd/macro.production.js	766 B
dist/umd/macro/vite.development.js	1.15 kB
dist/umd/macro/vite.production.js	874 B
dist/umd/utils.development.js	4.83 kB
dist/umd/utils.production.js	3.07 kB
dist/umd/vanilla.development.js	2.06 kB
dist/umd/vanilla.production.js	1.31 kB
dist/utils.js	4.68 kB
dist/vanilla.js	1.95 kB

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