[Android ]fix onMomentumScrollEnd similar to iOS

[Biki-das]

Summary:

in iOS on a scroll generated programatically, the onMomentScrollEnd is fired, though in case of android the same does not happen, this PR tries to implement the same behaviour for android as well, while diving through the code it seems we have two extra onMomentumScrollEnd events. Only one event should be fired.

iOS Behaviour on Programmatic Scroll

Screen.Recording.2024-06-26.at.8.18.46.PM.mov

Screen.Recording.2024-06-26.at.8.50.00.PM.mov

Android Behaviour on Programmatic Scroll

Screen.Recording.2024-06-26.at.8.19.28.PM.mov

Screen.Recording.2024-06-26.at.8.51.15.PM.mov

If closely observed we can see the onMomentumScrollEnd does not gets called in Android unlike to iOS.

Changelog:

[Android] [Fixed] - fix onMomentum scroll end similar to iOS

Test Plan:

i have added updates to the FlatList example and ScrollViewSimple
here is a ScreenRecording of onMomentumScrollEnd firing in android after the code changes

Screen.Recording.2024-06-26.at.8.12.08.PM.mov

Screen.Recording.2024-06-26.at.8.41.55.PM.mov

[Biki-das]

cc @NickGerleman @javache

[Biki-das]

@cipolleschi would also love to know your thoughts as well.

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	20,300,225	-15,772
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	23,497,181	-16,121
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: e6dd44d
Branch: main

[cipolleschi]

Android is not really my area of expertise, so @javache and @cortinico would be better reviewers.

A couple of points though:

• The 2 different events could be there because of Old Arch/New Arch variants
• The Android code in the PR seems to tackle only the Old Architecture. Could you see if the New Architecture has the same problem? We are hyper focused on the New Arch, so Old Arch-only fixes are lower priorities for us.