Added a test

dbms/tests/queries/0_stateless/00994_table_function_numbers_mt.reference

+0	9999999	49999995000000
+10000000	14999999	62499997500000
+10000000	14999999	62499997500000

dbms/tests/queries/0_stateless/00994_table_function_numbers_mt.sql

+SELECT min(number), max(number), sum(number) FROM numbers_mt(10000000);
+SELECT min(number), max(number), sum(number) FROM numbers(10000000, 5000000);
+SELECT min(number), max(number), sum(number) FROM numbers_mt(10000000, 5000000);