`ListGroupedCheckbox` doesn't work when there is no `mapItemGroupedType` parameter.

[UnreALi]

Hello, I have a bug report.
ListGroupedCheckbox doesn't work when there is no mapItemGroupedType parameter.
No matter what you set mapItemGroupedType: { // 0: GroupedType.Chips, // 1: GroupedType.Chips, 10000000: GroupedType.Default, }, something like this will work. Also the GroupedType.Default property has a similar reaction problem may be in the GroupedType.Default enum.

Your package has made my life a lot easier, I can't help you as I'm very new to darts and flutter please keep improving it.

[liodali]

i will quick fix where mapItemGroupedType is empty or null we will show default SimpleGroupedCheckbox

Im happy to see my package helped you at least