chore: clean code

Author: aojunhao123

src/Tooltip.tsx

@@ -115,10 +115,6 @@ const Tooltip = (props: TooltipProps, ref: React.Ref<TooltipRef>) => {
   );
 
   const getChildren = () => {
-    if (!React.isValidElement(children)) {
-      return <span>{children}</span>;
-    }
-
     const originalProps = (children as React.ReactElement)?.props || {};
 
     const childProps = {

tests/index.test.tsx

@@ -279,35 +279,5 @@ describe('rc-tooltip', () => {
     expect(tooltipElement.style.backgroundColor).toBe('blue');
     expect(tooltipBodyElement.style.color).toBe('red');
   });
-
-  it('should wrap invalid children with span', () => {
-    const { container } = render(
-      // @ts-expect-error
-      <Tooltip overlay="tip">
-        plain text
-      </Tooltip>,
-    );
-
-    const span = container.querySelector('span');
-    expect(span).toBeTruthy();
-    expect(span.textContent).toBe('plain text');
-  });
-
-  it('should handle null and false children', () => {
-    const { container: container1 } = render(
-      <Tooltip overlay="tip">
-        {null}
-      </Tooltip>,
-    );
-    expect(container1.querySelector('span')).toBeTruthy();
-
-    const { container: container2 } = render(
-      <Tooltip overlay="tip">
-        {/* @ts-expect-error */}
-        {false}
-      </Tooltip>,
-    );
-    expect(container2.querySelector('span')).toBeTruthy();
-  });
 });