[codegen] move remapUnionTypeAnnotationMemberNames to Parser

[youedd]

Summary

Part of #34872 (comment)

[Assigned to @youedd] Create a new function remapUnionTypeAnnotationMemberNames in the parser.js file and add documentation to it. Implement it properly in the FlowParser.js and in the TypeScriptParser.js. Remove the function remapUnionTypeAnnotationMemberNames and update the emitUnionTypeAnnotation signature to accept a Parser parameter instead of a language one. Use the new Parser function instead of the old one here.

Changelog

[Internal] [changed] - move remapUnionTypeAnnotationMemberNames to the parsers implementations

Test Plan

yarn jest react-native-codegen

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	7,100,944	+0
android	hermes	armeabi-v7a	6,470,646	+0
android	hermes	x86	7,518,793	+0
android	hermes	x86_64	7,377,397	+0
android	jsc	arm64-v8a	8,965,032	+0
android	jsc	armeabi-v7a	7,696,430	+0
android	jsc	x86	9,027,537	+0
android	jsc	x86_64	9,505,668	+0

Base commit: f657d29
Branch: main

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: f657d29
Branch: main

[pull-bot]

PR build artifact for ca1a85e6ec77ef9ae4808029e618bc3d7347cbe6 is ready.
To use, download tarball from "Artifacts" tab in this CircleCI job then run yarn add <path to tarball> in your React Native project.

[pull-bot]

PR build artifact for ca1a85e6ec77ef9ae4808029e618bc3d7347cbe6 is ready.
To use, download tarball from "Artifacts" tab in this CircleCI job then run yarn add <path to tarball> in your React Native project.

[cipolleschi]

Thanks for doing this, it looks very good to me! :D

[cipolleschi]

Could you rebase to solve conflicts? 🙏

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[youedd]

@cipolleschi it's rebased !

[pull-bot]

PR build artifact for 9aac210 is ready.
To use, download tarball from "Artifacts" tab in this CircleCI job then run yarn add <path to tarball> in your React Native project.

[pull-bot]

PR build artifact for 9aac210 is ready.
To use, download tarball from "Artifacts" tab in this CircleCI job then run yarn add <path to tarball> in your React Native project.

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.