Will allow side alphabet list to work properly on android when the co…

[mag1492]

Will work when component is not used as primary and only view.

Will work only with empty sections allowed. (Otherwise need to change section offset calculation)

FirstElement in alphabetSideListIndex has the proper offset. Works when alphabet section are not always populated with items.

Ex:

A: [] B: [{...}]

etc.

[sami718]

I have same issue related to this commit. Please merge this commit. It will help me to reduce my issue