"autocomplete" editor does not allow to work with null values

[KES777]

Describe the bug
A clear and concise description of what the bug is.

Tabulator Info

• 6.3

Working Example
This Tabulator's code passes null value as is.

inputValues.forEach((value) => {
 if(typeof value !== "object"){
  value = {
   label:value,
   value:value,
  };
}
	
this._parseListItem(value, data, 0);
});

To Reproduce
Create Tabulator with the "list" editor and null values:

{title:"Example", field:"example", editor:"list", editorParams:{ values: [ 1, null ] } }

Expected behavior
Editor should allow to list null item/option.

It should be something like value == null || typeof value !== "object"

Screenshots