UX rework: Fix crash. Do not try to go to a section when clicking on its sticky header if this section is empty
UX rework: Fix crash. Do not try to go to a section when clicking on its sticky header if this section is empty

vector-im/vector-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/vector-ios,vector-im/vector-ios,vector-im/riot-ios