Add E2E Snapshot Tests for FlatList

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Add E2E Jest Snapshot Tests for FlatList. Tests should exist as samples within RNTester.

STATUS TYPES

Status	Description
Not Implemented	Prop is not implemented for given architecture.
Not Completed	No test or sample exists for the prop.
Sample Completed	Sample exists for the prop, but sample is not run in a Jest Snapshot Test.
Completed	Sample and Snapshot test exists for the prop.

PROPS STATUS FOR FLATLIST

Test Description	Status (Paper)	Status (Fabric)
Default	[x] Sample Completed – RNTester	[x] Completed
AccessibilityHint	[ ] Not Completed	[ ] Not Completed
AccessibilityLabel	[ ] Not Completed	[ ] Not Completed
AccessibilityActions	[ ] Not Completed	[ ] Not Completed
AccessibilityRole	[ ] Not Completed	[x] Completed
AccessibilityValue	[ ] Not Completed	[ ] Not Completed
ImportantforAccessibility – no-hide-descendants	[ ] Not Completed	[ ] Not Completed
testID	[x] Sample Completed - RN Tester	[x] Completed
Style – backgroundColor	[ ] Not Completed	[x] Completed
Style – borderBottomColor	Not Implemented	[ ] Not Completed
Style – borderBottomEndRadius	[ ] Not Completed	[ ] Not Completed
Style –borderBottomLeftRadius	[ ] Not Completed	[ ] Not Completed
Style – borderBottomRightRadius	[ ] Not Completed	[ ] Not Completed
Style – borderBottomStartRadius	[ ] Not Completed	[ ] Not Completed
Style – borderBottomWidth	[ ] Not Completed	[ ] Not Completed
Style – borderColor	[ ] Not Completed	[ ] Not Completed
Style – borderEndColor	Not Implemented	[ ] Not Completed
Style – borderLeftColor	Not Implemented	[ ] Not Completed
Style – borderLeftWidth	[ ] Not Completed	[ ] Not Completed
Style – borderRadius	[ ] Not Completed	[ ] Not Completed
Style – borderRightColor	Not Implemented	[ ] Not Completed
Style – borderStartColor	Not Implemented	[ ] Not Completed
Style – borderStyle	Not Implemented	[ ] Not Completed
Style – borderTopColor	Not Implemented	[ ] Not Completed
Style – borderTopEndRadius	[ ] Not Completed	[ ] Not Completed
Style – borderTopLeftRadius	[ ] Not Completed	[ ] Not Completed
Style – borderTopRightRadius	[ ] Not Completed	[ ] Not Completed
Style – borderTopStartRadius	[ ] Not Completed	[ ] Not Completed
Style – borderTopWidth	[ ] Not Completed	[ ] Not Completed
Style – borderWidth	[ ] Not Completed	[ ] Not Completed
Style – elevation	Not Implemented	[ ] Not Completed
Style – opacity	[ ] Not Completed	[ ] Not Completed
Accessible	[ ] Not Completed	[ ] Not Completed
Focusable	[ ] Not Completed	[ ] Not Completed
HitSlop	[ ] Not Completed	[ ] Not Completed
NativeID	[ ] Not Completed	[ ] Not Completed
NextFocus*	[ ] Not Completed	[ ] Not Completed
onAccessibilityAction	[ ] Not Completed	[ ] Not Completed
onAccessibilityTab	[ ] Not Completed	[ ] Not Completed
onAccessibilityEscape	[ ] Not Completed	[ ] Not Completed
onLayout	[ ] Not Completed	[ ] Not Completed
onMoveShoudlSetResponder	[ ] Not Completed	[ ] Not Completed
onMoveShouldSetResponderCapture	[ ] Not Completed	[ ] Not Completed
onResponderGrant	[ ] Not Completed	[ ] Not Completed
onResponderMove	[ ] Not Completed	[ ] Not Completed
onResponserReject	[ ] Not Completed	[ ] Not Completed
onResponderRelease	[ ] Not Completed	[ ] Not Completed
onResponderTerminate	[ ] Not Completed	[ ] Not Completed
onResponderTerminationRequest	[ ] Not Completed	[ ] Not Completed
onStartShouldSetResponder	[ ] Not Completed	[ ] Not Completed
onStartShouldSetResponderCatpure	[ ] Not Completed	[ ] Not Completed
pointerEvents	[ ] Not Completed	[ ] Not Completed
removeClippedSubviews	[ ] Not Completed	[ ] Not Completed
ItemSeperatorComponent	[x] Sample Completed - RN Tester	[x] Completed
ListEmptyComponent	[x] Sample Completed - RN Tester	[x] Completed
ListItemComponent	[x] Sample Completed - RN Tester	[x] Completed
ListFooterComponent	[x] Sample Completed - RN Tester	[x] Completed
ListFooterComponentStyle	[ ] Not Completed	[ ] Not Completed
ListHeaderComponent	[ ] Not Completed	[x] Completed
ListHeaderComponentStyle	[ ] Not Completed	[ ] Not Completed
contentContainerStyle	[ ] Not Completed	[x] Completed
columnWrapperStyle	[ ] Not Completed	[ ] Not Completed
extraData	[ ] Not Completed	[ ] Not Completed
getItemLayout	[x] Sample Completed - RN Tester	[x] Completed
Horizontal	[ ] Not Completed	[x] Completed
initialNumToRender	[ ] Not Completed	[ ] Not Completed
initialScrollIndex	[ ] Not Completed	[x] Completed
Inverted	[ ] Not Completed	[x] Completed
keyExtractor	[x] Sample Completed - RN Tester	[x Completed
numColumns	[x] Sample Completed - RN Tester	[x] Completed
onStartReached	[ ] Not Completed	[x] Completed
onEndReached	[ ] Not Completed	[x] Completed
onEndReachedThreshold	[ ] Not Completed	[ ] Not Completed
onRefresh	[x] Sample Completed - RN Tester	[x] Completed
onScroll	[x] Sample Completed - RN Tester	[x] Completed
onScrollToIndexFailed	[x] Sample Completed - RN Tester	[x] Completed
onViewableItemsChanged	[ ] Not Completed	[x] Completed
progressViewOffset	[ ] Not Completed	[ ] Not Completed
Refreshing	[x] Sample Completed - RN Tester	[x] Completed
viewabilityConfig	[ ] Not Completed	[x] Completed
viewabilityConfigCallbackPairs	[ ] Not Completed	[ ] Not Completed
flashScrollIndicators()	[ ] Not Completed	[ ] Not Completed
getNativeScrollRef()	[ ] Not Completed	[ ] Not Completed
getScrollResponder()	[ ] Not Completed	[ ] Not Completed
getScrollableNode()	[ ] Not Completed	[ ] Not Completed
recordInteraction()	[ ] Not Completed	[ ] Not Completed
scrollToEnd()	[ ] Not Completed	[ ] Not Completed
scrollToIndex()	[ ] Not Completed	[ ] Not Completed
scrollToItem()	[ ] Not Completed	[ ] Not Completed
scrollToOffset()	[ ] Not Completed	[ ] Not Completed
disableVirtualization	[ ] Not Completed	[x] Completed
maintainVisibleContentPostion	[ ] Not Completed	[x] Completed

Start in RNTester by locating the existing FlatList samples and the Jest snapshot-test setup. Review the Paper and Fabric status table to identify applicable unfinished props, then add samples and snapshots until each supported item reaches Completed.

Written by the indexing model from the issue text.

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