refactor: replace popupTransitionName with popupMotion

Author: aojunhao123

src/SelectTrigger.tsx

@@ -163,7 +163,7 @@ const SelectTrigger: React.ForwardRefRenderFunction<RefTriggerProps, SelectTrigg
       popupPlacement={placement || (direction === 'rtl' ? 'bottomRight' : 'bottomLeft')}
       builtinPlacements={mergedBuiltinPlacements}
       prefixCls={popupPrefixCls}
-      popupTransitionName={mergedTransitionName}
+      popupMotion={{ motionName: mergedTransitionName }}
       popup={<div onMouseEnter={onPopupMouseEnter}>{popupNode}</div>}
       ref={triggerPopupRef}
       stretch={stretch}

tests/SelectTrigger.spec.tsx

@@ -12,6 +12,6 @@ describe('Select.Trigger', () => {
       </SimpleSelectTrigger>,
     );
 
-    expect(global.triggerProps.popupTransitionName).toBe('rc-select-dropdown-slide-up');
+    expect(global.triggerProps.popupMotion.motionName).toBe('rc-select-dropdown-slide-up');
   });
 });