calculated scrollable range and bounds to prevent overscroll

[nohabean]

Summary:

This PR fixes an issue in the fling behavior where OverScroller could cause overscroll due to an unbounded scroll range. The existing implementation used Integer.MAX_VALUE as the max scroll limit.

The proposed change calculates the actual scrollable range using computeVerticalScrollRange() and clamps the fling bounds based on the result. This prevents scrolling beyond content limits.

Changelog:

[ANDROID] [FIXED] - Prevents overscroll during fling by calculating and applying scrollable bounds based on the scrollable range.

Test Plan:

Manually tested fling behavior in a ScrollView with varying content lengths.
Verified that fling stops at the correct content boundary and does not scroll beyond the visible area.

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[NickGerleman]

A couple of bits come to mind.

1. We are allowed to overscrolll, at least sometimes. I think this is controlled via overScrollMode. This has a rubber banding effect
2. We have the same logic in HorizontalScrollView

How are these bounds derived normally for a fling? Either by RN, or by Android ScrollView?

[react-native-bot]

This PR is stale because it has been open for 180 days with no activity. It will be closed in 7 days unless you comment on it or remove the "Stale" label.