fix: use selected for item-selected effect

Author: vagusX

src/index.tsx

@@ -201,7 +201,7 @@ const Segmented = React.forwardRef<HTMLDivElement, SegmentedProps>(
               `${prefixCls}-item`,
               {
                 [`${prefixCls}-item-selected`]:
-                  segmentedOption.value === value && !thumbShow,
+                  segmentedOption.value === selected && !thumbShow,
               },
             )}
             checked={segmentedOption.value === selected}