IDENTITY_VAL_LOCAL() returned value is modified incorrectly by a multi-row INSERT statement.

Changes made in DERBY-353 break the documented behaviour of IDENTITY_VAL_LOCAL(). Now the returned value is modified when a multi-row insert is performed.
IDENTITY_VAL_LOCAL() should not be updated when this occurs.

For this script the last value returned should be 2 (as in 10.1) but in 10.2 is 4

create table ta (a int, b int generated always as identity);
insert into ta(a) values 100;
values IDENTITY_VAL_LOCAL();
insert into ta(a) values 200;
values IDENTITY_VAL_LOCAL();
insert into ta(a) values 300,400;
values IDENTITY_VAL_LOCAL();