reuse existing source URL for bridgeless

[philIip]

Summary: Changelog: [iOS][Breaking]

so i was thinking that the getBundleURL API that we added on the app delegate is redundant since all working apps will have the source url provided in sourceURLForBridge:. i briefly perused GH: https://github.com/search?q=sourceURLForBridge&type=code, and it seems no one actually needs the bridge to generate this url.

i think there's an opportunity to remove a step from the upgrade flow by either:

1. getting rid of getBundleURL and reuse sourceURLForBridge:
2. fallback to sourceURLForBridge: in getBundleURL

in this diff, i ended up going with 1), but i'm open to options. the tricky thing is that sourceURLForBridge: implies the old architecture.

Differential Revision: D48141201

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D48141201

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	8,891,055	-2
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	9,482,839	-2
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: fdab18b0a1f30540400abf05fa3f56ca002fefca Branch: main

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D48141201

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