[Bug] Undefined cellValue lost during JSON conversion in sheet.mutation.move-range

[nahooni0511]

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• Is this really a problem?
• I have searched the Github Issues for similar issues, but did not find anything.

Affected packages and versions

0.6.1

Reproduction link

https://stackblitz.com/edit/univer-sheets-vite-ovsquyxg?file=src%2Fmain.ts

When executing the sheet.mutation.move-range mutation, if a cell's value is undefined, that information is lost during the JSON conversion process. This happens because JSON.stringify() automatically omits properties with undefined values.

Reproduction Steps:

const paramstr = JSON.stringify({
      fromRange: {
        startRow: 0,
        startColumn: 1,
        endRow: 0,
        endColumn: 1,
        rangeType: 0,
      },
      toRange: {
        startRow: 0,
        startColumn: 0,
        endRow: 0,
        endColumn: 0,
        rangeType: 0,
      },
      from: {
        value: {
          '1': {
            '1': null,
          },
        },
        subUnitId: workbook.getActiveSheet().getSheetId(),
      },
      to: {
        value: {
          '1': {
            '0': undefined,
          },
        },
        subUnitId: workbook.getActiveSheet().getSheetId(),
      },

      unitId: workbook.getId(),
      trigger: 'sheet.command.move-range',
    });
univerAPI.executeCommand('sheet.mutation.move-range', JSON.parse(paramstr));

Expected behavior

the cell at (0,0) is deleted.

Actual behavior

the cell at (0,0) is not deleted.

System information

No response

[hexf00]

This is the behavior of JS and has nothing to do with Univer