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.

break;
        case ">":
          currCase = handlers[1];
          break;
        case "<":
          currCase = handlers[2];
          break;
        case "=":
          currCase = handlers[0];
          break;
        default:
          buf.push(command);
      }
    }
    return buf.join("");
  }
  scand(cFormat, cDate) {
    if (cDate === "") {
      return new Date();
    }
    switch (cFormat) {
      case 0:
        return this.scand("D:yyyymmddHHMMss", cDate);
      case 1:
        return this.scand("yyyy.mm.dd HH:MM:ss", cDate);
      case 2:
        return this.scand("m/d/yy h:MM:ss tt", cDate);
    }
    if (!this._scandCache.has(cFormat)) {
      const months = this._months;