fix(virtualScoll): fix visibleData calculation to fix blank bug #2999
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huangchen1031
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honkinglin,
uyarn,
carolin913,
HaixingOoO,
NWYLZW and
ZWkang
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/update-snapshot |
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/update-snapshot |
uyarn
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这个改动会影响部分其他使用useVirtualScroll的组件的行为 |
修改了lastIndex的初始值为data.length ，解决在滚动到底部的时候有些场景找不到匹配不到一个元素。 |
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fix #2956
🤔 这个 PR 的性质是？
🔗 相关 Issue
#2956
💡 需求背景和解决方案
滚动可视区域过高时，滚动后底部会留白。
原因是：渲染数据长度默认为bufferSize * 3，当rowHeight * bufferSize * 3 < 可视区域高度 * 2 时，小于的部分会变成空白。
解决方案：动态计算visibleData的长度，保持为填充满可视区域高度后，前后各增加bufferSize的长度。
📝 更新日志
fix(useVirtualScroll): 修改visibleData计算方式，解决可视区域过高时，滚动后底部留白的问题
本条 PR 不需要纳入 Changelog
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