M2-6447: Removed default value for Date Picker Item (#776)

https://mindlogger.atlassian.net/browse/M2-6447

src/shared/ui/survey/DatePickerItem.tsx

@@ -1,4 +1,4 @@
-import { FC, useMemo } from 'react';
+import { FC } from 'react';
 
 import { format } from 'date-fns';
 
@@ -21,13 +21,7 @@ const DatePickerItem: FC<Props> = ({ value, onChange }) => {
     onChange(formattedDate);
   };
 
-  const valueAsDate = useMemo(() => {
-    if (!value) {
-      return new Date();
-    }
-
-    return getDateFromString(value);
-  }, [value]);
+  const valueAsDate = value ? getDateFromString(value) : null;
 
   return (
     <DateTimePicker

src/shared/ui/survey/tests/DatePickerItem.test.tsx

@@ -5,7 +5,7 @@ import TamaguiProvider from '@app/app/ui/AppProvider/TamaguiProvider';
 import { DatePickerItem } from '@shared/ui';
 
 describe('Test DatePickerItem', () => {
-  it('Should render now date when value is null', () => {
+  it('Should render a MM/DD/YYYY placeholder when value is null', () => {
     const datePickerComponent = renderer.create(
       <TamaguiProvider>
         <DatePickerItem value={null} onChange={jest.fn()} />
@@ -16,11 +16,10 @@ describe('Test DatePickerItem', () => {
       accessibilityLabel: 'date-picker',
     });
 
-    const resultProp = format(datePicker.props.value, 'yyyy-MM-dd');
-
-    const expectedDate = format(new Date(), 'yyyy-MM-dd');
+    const placeholder = datePicker.props.placeholder as string;
+    const expected = 'MM/DD/YYYY';
 
-    expect(resultProp).toBe(expectedDate);
+    expect(placeholder).toBe(expected);
   });
 
   it('Should render new Date(0) when value is 1970-01-01', () => {