[Codegen] Move emitUnionTypeAnnotation into parsers-primitives

[MaeIg]

Summary

This PR aims to move the emitUnionTypeAnnotation function into parsers-primitives.
It was extracted to parsers-commons in a task of #34872. But, all other emit* functions are in this file, so I think it was a mistake.

Changelog

[Internal] [Changed] - Move emitUnionTypeAnnotation function into parsers-primitives

Test Plan

yarn flow:

yarn lint:

yarn test:

[analysis-bot]

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

Base commit: 2db26c5
Branch: main

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	7,096,963	+0
android	hermes	armeabi-v7a	6,466,006	+0
android	hermes	x86	7,515,055	+0
android	hermes	x86_64	7,373,440	+0
android	jsc	arm64-v8a	8,962,052	+0
android	jsc	armeabi-v7a	7,693,675	+0
android	jsc	x86	9,024,635	+0
android	jsc	x86_64	9,502,137	+0

Base commit: 2db26c5
Branch: main

[cipolleschi]

Thank you so much for taking care of this cleanup. It was my mistake in listing the task in the issue! 🙏

[facebook-github-bot]

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

[pull-bot]

PR build artifact for e8452cc227278d849921c4d1c6d836d4a4bade4e 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 e8452cc227278d849921c4d1c6d836d4a4bade4e 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.

[MaeIg]

Hello @cipolleschi!
I rebased on main and resolved conflicts. Maybe this one is mergeable? I believe that the internal linter was green

[pull-bot]

PR build artifact for 466f009 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 466f009 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]

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

[github-actions]

This pull request was successfully merged by @MaeIg in ee8701e.

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