Bug fix (App crash): Prevent insertion of existing rows at the end of back pagination.
Bug fix (App crash): Prevent insertion of existing rows at the end of back pagination.

matrix-org/matrix-ios-console,vector-im/riot-ios,matrix-org/matrix-ios-console,vector-im/riot-ios,vector-im/riot-ios,vector-im/vector-ios,vector-im/vector-ios,vector-im/vector-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios