fix: remove unnecessary 'as any' type assertion in test

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: martijnrusschen

src/test/datepicker_test.test.tsx

@@ -721,9 +721,7 @@ describe("DatePicker", () => {
   });
 
   it("should apply the default outsideClickIgnoreClass when prop is falsy", () => {
-    const { container } = render(
-      <DatePicker outsideClickIgnoreClass={null as any} />,
-    );
+    const { container } = render(<DatePicker outsideClickIgnoreClass={null} />);
     const input = safeQuerySelector<HTMLInputElement>(container, "input");
     fireEvent.focus(input);
     expect(input?.classList.contains(OUTSIDE_CLICK_IGNORE_CLASS)).toBe(true);