Added Label Widget to Inactive Item

[hrithikm2]

Motivation:

1. In some devices, I have noticed that there have been issues with responsiveness related to the label of the inactive item.
2. The ability to make the label as customisable as possible, using Widget instead of String will make it more customisable.
3. I would suggest to use this for cases where label is long and could look bad when the text overflows. So something like FittedBox aur AutoSizeText Widget could help overcome this challenge using labelTextWidget property.