Unstable test TestRandomPanicConsume

[zimulala]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

    aggregate_test.go:333: 
        	Error Trace:	pkg/executor/test/aggregate/aggregate_test.go:333
        	Error:      	Error message not equal:
        	            	expected: "failpoint panic: ERROR 1105 (HY000): Out Of Memory Quota![conn=1]"
        	            	actual  : "context canceled"
        	Test:       	TestRandomPanicConsume

2. What did you expect to see? (Required)

Pass

3. What did you see instead (Required)

https://do.pingcap.net/jenkins/blue/organizations/jenkins/pingcap%2Ftidb%2Fghpr_unit_test/detail/ghpr_unit_test/36565/pipeline/

4. What is your TiDB version? (Required)

[xzhangxian1008]

/remove-label may-affects-6.5

[xzhangxian1008]

/remove-label may-affects-7.1

[xzhangxian1008]

/remove-label may-affects-7.5