[Bug] The dropdown fill operation in the sheet cell will clear the custom attribute of the filled cell

[levi-li-yi]

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Affected packages and versions

0.5.5

Reproduction link

New install: Following https://docs.univer.ai/en-US/guides/sheets/getting-started/installation

const sheet = univerAPI.getActiveWorkbook().getActiveSheet()

sheet.getRange('A1').setValue({
      v: 'value a',
      custom: {
        key: 'custom1',
      },
    })

sheet.getRange('A2').setValue({
      v: 'value b',
      custom: {
        key: 'custom2',
      },
    })

Expected behavior

After filling the A1 cell down into the A2 cell, the value of the A2 cell is replaced, the original custom attribute of cell A2 is still retained

Actual behavior

but the custom property of the A2 cell disappears

System information

System:
OS: Windows 11 10.0.26100
CPU: (16) x64 AMD Ryzen 7 PRO 5875U with Radeon Graphics
Memory: 5.85 GB / 31.31 GB
Binaries:
Node: 18.3.0 - C:\Program Files\nodejs\node.EXE
npm: 8.11.0 - C:\Program Files\nodejs\npm.CMD
Browsers:
Edge: Chromium (129.0.2792.89)
Internet Explorer: 11.0.26100.1882