DatePicker helpers test cases fix

Author: dhavalveera

packages/ui/src/components/Datepicker/helpers.spec.tsx

@@ -154,14 +154,14 @@ describe("addYears", () => {
 describe("getFormattedDate", () => {
   it("returns the formatted date string using the default options", () => {
     const date = new Date(2023, 0, 15); // January 15th, 2023
-    const formattedDate = getFormattedDate("en", date, 'dd-MMM-yyyy');
+    const formattedDate = getFormattedDate("en", date, 'MMMM dd, yyyy');
     expect(formattedDate).toBe("January 15, 2023");
   });
 
   it("returns the formatted date string using the specified options", () => {
     const date = new Date(2023, 0, 15); // January 15th, 2023
     const options: Intl.DateTimeFormatOptions = { month: "short", year: "numeric" };
-    const formattedDate = getFormattedDate("en", date, 'dd-MMM-yyyy', options);
+    const formattedDate = getFormattedDate("en", date, 'MMM yyyy', options);
     expect(formattedDate).toBe("Jan 2023");
   });