Standardize secondary package READMEs (#57273) #19

Job	Run time
determine_mode	4s
set_hermes_version	-10s
publish_bumped_packages	54s
prebuild_react_native_core	-1s
build_android	-1s
prebuild_apple_dependencies	-1s
bump_podfile_lock	0s
publish_react_native	0s
post_publish	0s
generate_changelog	0s
create_draft_release	0s
	45s

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