[iOS] Bridgeless: Expose host delegate methods

[zhongwuzw]

Summary:

Expose host delegate methods that users can do some customize work.

Changelog:

[IOS] [ADDED] - Bridgeless: Expose host delegate methods

Test Plan:

Users can do some customized work by RCTRootViewFactory.

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	19,410,759	+15
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	22,784,271	+1
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: 03a51da727022d96f7f9bbc0840b1409121d0429 Branch: main

[facebook-github-bot]

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

[cipolleschi]

/rebase - this comment automatically rebase on top of main

[facebook-github-bot]

@cipolleschi merged this pull request in facebook/react-native@f500b47a957dea5e1ca2687965fb7a6a3fa64001.

[github-actions[bot]]

This pull request was successfully merged by @zhongwuzw in f500b47a957dea5e1ca2687965fb7a6a3fa64001.

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