Hi pdfjs team,

Please find attach a really simple pdf file to reproduce the issue.
[Date.pdf](https://github.com/mozilla/pdf.js/files/8242310/Date.pdf)
This pdf contains 4 date fields, One with a default format (dd/mm/yyyy) and the 3 others with custom formats:

    -  dd
    -  mm
    -  yyyy

The expected behavior is that whenever I fill dd field with 16 for instance, then when i focus out that field the value displayed is 16 but I get 01.

This happens for dd field and mm but it's working fine for dd/mm/yyyy and yyyy fields.

The initial values of the pdf are properly displayed, this happens only if I focus one of those fields.

Thank you for your time

Best regards.

});
    it("should convert Gray color for different color spaces", async () => {
      let value = await myeval(`color.convert(["G", 0.1], "T")`);
      expect(round(value)).toEqual(["T"]);
      value = await myeval(`color.convert(["G", 0.1], "G")`);
      expect(round(value)).toEqual(["G", 0.1]);
      value = await myeval(`color.convert(["G", 0.1], "RGB")`);
      expect(round(value)).toEqual(["RGB", 0.1, 0.1, 0.1]);
      value = await myeval(`color.convert(["G", 0.1], "CMYK")`);
      expect(round(value)).toEqual(["CMYK", 0, 0, 0, 0.9]);
    });
    it("should convert Transparent color for different color spaces", async () => {
      let value = await myeval(`color.convert(["T"], "T")`);
      expect(round(value)).toEqual(["T"]);
      value = await myeval(`color.convert(["T"], "G")`);
      expect(round(value)).toEqual(["G", 0]);
      value = await myeval(`color.convert(["T"], "RGB")`);
      expect(round(value)).toEqual(["RGB", 0, 0, 0]);
      value = await myeval(`color.convert(["T"], "CMYK")`);
      expect(round(value)).toEqual(["CMYK", 0, 0, 0, 1]);
    });
  });
  describe("App", function () {
    beforeAll(function () {
      sandbox.createSandbox({
        appInfo: { language: "en-US", platform: "Linux x86_64" },
        objects: {},
        calculationOrder: [],
      });
    });