docs(Stdlib): add details around None case for fromOption functions #9841

Job	Run time
test-devcontainer	18m 11s
build-compiler (ubuntu-24.04, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, linux...	5m 14s
build-compiler (windows-2025, 5.3.0, true, win32-x64, x86_64-pc-windows-gnu, .exe, release)	10m 4s
build-compiler (macos-15, 5.3.0, true, darwin-arm64, aarch64-apple-darwin, release)	5m 38s
build-compiler (ubuntu-24.04, ocaml-variants.5.0.0+options,ocaml-option-static, linux-x64, x86_64...	4m 46s
build-compiler (ubuntu-24.04-arm, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, t...	6m 11s
build-compiler (macos-15-intel, 5.3.0, true, darwin-x64, x86_64-apple-darwin, release)	14m 44s
api-docs	1m 42s
pkg-pr-new	53s
test-installation-npm (macos-15-intel)	26s
test-integration-rewatch (ubuntu-24.04-arm)	2m 58s
test-integration-rewatch (ubuntu-24.04)	3m 38s
test-installation-npm (ubuntu-24.04-arm)	19s
test-installation-npm (ubuntu-24.04)	18s
test-installation-pnpm (macos-15)	18s
test-integration-rewatch (macos-15)	4m 9s
test-integration-rewatch (windows-2025)	6m 54s
test-integration-rewatch (macos-15-intel)	6m 41s
test-installation-pnpm (macos-15-intel)	33s
test-installation-npm (windows-2025)	47s
test-installation-pnpm (ubuntu-24.04)	12s
test-installation-pnpm (ubuntu-24.04-arm)	21s
test-installation-npm (macos-15)	16s
test-installation-pnpm (windows-2025)	2m 4s
publish	-1s
	1h 37m 16s

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