[core][dev-menu] fix nightlies testing for 0.75

[Kudo]

Why

fix breaking changes for nightlies testing (0.75.0-nightly-20240319-d97741af6)

How

upstream changes:

• LongLivedObjectCollection::get() should pass runtime facebook/react-native@3706bf0
• CallInvoker() has new parameter for runtime: facebook/react-native@76ce789
• ReactActivityDelegate::createRootView() may return null facebook/react-native@da21799

this pr includes:

• moving testing SyncCallInvoker to shared TestingSyncJSCallInvoker
• remove unused ReactActivityHandler.createReactRootView() since this is not used for bridgeless mode
• slightly change DevMenuActivity.createRootView(). rather than get root view from super.createRootView(). let's get root view from mReactDelegate.reactRootView after loadApp()

Test Plan

• ci passed
• tested on an app generated by bunx create-expo-nightly --expo-repo /path/to/expo/expo. there is a build error from HermesExecutorFactory.h. i've reached out to meta that the include is not reachable by cocoapods. i have to manually modify the include.

Checklist

• Documentation is up to date to reflect these changes (eg: https://docs.expo.dev and README.md).
• Conforms with the Documentation Writing Style Guide
• This diff will work correctly for npx expo prebuild & EAS Build (eg: updated a module plugin).

[expo-bot]

The Pull Request introduced fingerprint changes against the base commit: 0ff9c52

Fingerprint diff

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