Feat: Add native support for `fallback` values in object schemas #1857

Job	Run time
Install packages	17s
Build and publish library	34s
Run ESLint in library	49s
Run Vitest in library	39s
Run Prettier in library	37s
Run ESLint in packages/to-json-schema	29s
Run Prettier in packages/to-json-schema	18s
Run Vitest in packages/to-json-schema	25s
Run ESLint in website	26s
Run Prettier in website	38s
	5m 12s

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