fix(Spin): not close Spin immediately when using delay (#40475)

* fix(Spin): close Spin immediately when using delay

* test(Spin): add delay close test case

components/spin/__tests__/delay.test.tsx

@@ -42,4 +42,15 @@ describe('delay spinning', () => {
     unmount();
     expect(cancel).toHaveBeenCalled();
   });
+
+  it('should close immediately', async () => {
+    jest.useFakeTimers();
+    const { container, rerender } = render(<Spin spinning delay={500} />);
+
+    await waitFakeTimer();
+    expect(container.querySelector('.ant-spin-spinning')).toBeTruthy();
+
+    rerender(<Spin spinning={false} delay={500} />);
+    expect(container.querySelector('.ant-spin-spinning')).toBeFalsy();
+  });
 });

components/spin/index.tsx

@@ -93,13 +93,17 @@ const Spin: React.FC<SpinClassProps> = (props) => {
   );
 
   React.useEffect(() => {
-    const updateSpinning = debounce(delay, () => {
-      setSpinning(customSpinning);
-    });
-    updateSpinning();
-    return () => {
-      updateSpinning?.cancel?.();
-    };
+    if (customSpinning) {
+      const showSpinning = debounce(delay, () => {
+        setSpinning(true);
+      });
+      showSpinning();
+      return () => {
+        showSpinning?.cancel?.();
+      };
+    }
+
+    setSpinning(false);
   }, [delay, customSpinning]);
 
   const isNestedPattern = React.useMemo<boolean>(() => typeof children !== 'undefined', [children]);