fix: overflowY = 'auto' when set scroll.y

Author: trongtai37

src/Table.tsx

@@ -315,7 +315,7 @@ function Table<RecordType extends DefaultRecordType>(tableProps: TableProps<Reco
 
   if (fixHeader) {
     scrollYStyle = {
-      overflowY: 'scroll',
+      overflowY: 'auto',
       maxHeight: scroll.y,
     };
   }

tests/Scroll.spec.jsx

@@ -35,7 +35,7 @@ describe('Table.Scroll', () => {
   it('renders scroll.x and scroll.y are both true', () => {
     const wrapper = mount(createTable({ scroll: { x: true, y: 200 } }));
     expect(wrapper.find('.rc-table-body').props().style.overflowX).toEqual('auto');
-    expect(wrapper.find('.rc-table-body').props().style.overflowY).toEqual('scroll');
+    expect(wrapper.find('.rc-table-body').props().style.overflowY).toEqual('auto');
   });
 
   it('fire scroll event', () => {