about clear button bug fix for v5.39.0

[mbdmt]

v5.39.0
My own situation,
After clicking the clear button, today’s date cannot be selected.
This is my own modification, please tell me if there is a problem with this modification

line 673:
this.input.val("" + (this.unset ? '' : this._dates[index].format(this.actualFormat)));

fix :
this.input.val("" + (this.unset ? '' : this.getMoment().format(this.actualFormat)));