Potential flaky tests

[xudong963]

datafusion/datafusion/sqllogictest/test_files/aggregate.slt

Lines 5227 to 5229 in 8a193c2

	query I
	SELECT DISTINCT c3 FROM aggregate_test_100 group by c3 limit 5;
	----

datafusion/datafusion/sqllogictest/test_files/aggregate.slt

Lines 5251 to 5253 in 8a193c2

	query II
	SELECT c2, c3 FROM aggregate_test_100 group by c2, c3 limit 5 offset 4;
	----

datafusion/datafusion/sqllogictest/test_files/aggregate.slt

Lines 5286 to 5288 in 8a193c2

	query I
	SELECT DISTINCT c3 FROM aggregate_test_100 WHERE c3 between 10 and 20 group by c2, c3 limit 4;
	----

datafusion/datafusion/sqllogictest/test_files/aggregate.slt

Lines 5336 to 5338 in 8a193c2

	query II
	SELECT DISTINCT c3, c2 FROM aggregate_test_100 group by c2, c3 limit 3 offset 10;
	----

Originally posted by @Weijun-H in #15786 (review)

[bikbov]

take