[BP to 6.6.2] Primary index scan used with query with OR condition

create primary index on default;

create index ix1 on default(c1) where meta().id like "abc%";

create index ix2 on default(c2) where meta().id like "abc%";

create index ix3 on default(c3) where meta().id like "abc%";

explain select * from default where meta().id like "abc%" and (c1 = 1 or c2 = 2 or c3 = 3);

in 6.0 a union scan with ix1/ix2/ix3 is used, in 6.6.0 and later primary index scan is used.