ITS#10233 Fix idl intersection
The mdb_idl_intersection() and wt_idl_intersection() functions derived from back-bdb return wrong results.
expect: [1, 3] ∩ [2] = []
actual: [1, 3] ∩ [2] = [2]
The mdb_idl_intersection() and wt_idl_intersection() functions derived from back-bdb return wrong results.
expect: [1, 3] ∩ [2] = []
actual: [1, 3] ∩ [2] = [2]