Allow handling errors in getSnapshot of useSyncExternalStore & add more tests

[andrewiggins]

• If getSnapshot throws an error while checking for an update, allow components to handle it by rerendering the component so that getSnapshot can throw again during render.
• Move useSyncExternalStore tests into their own file
• Copy relevant tests from React's test suite. I removed tests related to useSyncExternalStoreWithSelector since React doesn't support this and engineers have to use the shim package.
• Add test for handling updates to store before subscribing in useEffect

[github-actions]

Size Change: +90 B (0%)

Total Size: 57.3 kB

Filename	Size	Change
compat/dist/compat.js	3.97 kB	+28 B (0%)
compat/dist/compat.module.js	3.9 kB	+28 B (0%)
compat/dist/compat.umd.js	4.04 kB	+34 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
debug/dist/debug.js	3.5 kB	0 B
debug/dist/debug.module.js	3.5 kB	0 B
debug/dist/debug.umd.js	3.58 kB	0 B
devtools/dist/devtools.js	231 B	0 B
devtools/dist/devtools.module.js	240 B	0 B
devtools/dist/devtools.umd.js	315 B	0 B
dist/preact.js	4.42 kB	0 B
dist/preact.min.js	4.45 kB	0 B
dist/preact.min.module.js	4.45 kB	0 B
dist/preact.min.umd.js	4.48 kB	0 B
dist/preact.module.js	4.45 kB	0 B
dist/preact.umd.js	4.48 kB	0 B
hooks/dist/hooks.js	1.53 kB	0 B
hooks/dist/hooks.module.js	1.56 kB	0 B
hooks/dist/hooks.umd.js	1.62 kB	0 B
jsx-runtime/dist/jsxRuntime.js	365 B	0 B
jsx-runtime/dist/jsxRuntime.module.js	331 B	0 B
jsx-runtime/dist/jsxRuntime.umd.js	445 B	0 B
test-utils/dist/testUtils.js	453 B	0 B
test-utils/dist/testUtils.module.js	454 B	0 B
test-utils/dist/testUtils.umd.js	536 B	0 B

_{compressed-size-action}

[coveralls]

coverage: 99.43% (+0.004%) from 99.426% when pulling a1ce2a7 on useSyncExternalStore-tests into 9956916 on main.

[marvinhagemeister]

Nice!