fix: Use the passed in default when disabled (#594)

* fix: Use the passed in default when disabled

* add test case

---------

Co-authored-by: dujiaqi <[email protected]>

Author: Yuiai01

src/RangePicker.tsx

@@ -307,7 +307,7 @@ function InnerRangePicker<DateType>(props: RangePickerProps<DateType>) {
 
       // Fill disabled unit
       for (let i = 0; i < 2; i += 1) {
-        if (mergedDisabled[i] && !getValue(postValues, i) && !getValue(allowEmpty, i)) {
+        if (mergedDisabled[i] && !postValues && !getValue(postValues, i) && !getValue(allowEmpty, i)) {
           postValues = updateValues(postValues, generateConfig.getNow(), i);
         }
       }

tests/range.spec.tsx

@@ -1776,4 +1776,10 @@ describe('Picker.Range', () => {
     // No selected cell
     expect(document.querySelector('.rc-picker-cell-selected')).toBeFalsy();
   });
+
+  it('range picker should use the passed in default when part is disabled', () => {
+    render(<MomentRangePicker defaultValue={[null, null]} disabled={[false, true]} />);
+
+    expect(document.querySelectorAll('input')[1].value).toBeFalsy();
+  });
 });