Add tiflash wait info in execution summary

[yibin87]

Enhancement

Reference: pingcap/tiflash#9489

[yibin87]

/label type-bug

[ti-chi-bot]

@yibin87: The label(s) type-bug cannot be applied. These labels are supported: fuzz/sqlancer, challenge-program, compatibility-breaker, first-time-contributor, contribution, good first issue, correctness, duplicate, proposal, security, needs-more-info, needs-cherry-pick-release-5.4, needs-cherry-pick-release-6.1, needs-cherry-pick-release-6.5, needs-cherry-pick-release-7.1, needs-cherry-pick-release-7.5, needs-cherry-pick-release-8.1, needs-cherry-pick-release-8.5, affects-5.4, affects-6.1, affects-6.5, affects-7.1, affects-7.5, affects-8.1, affects-8.4, affects-8.5, may-affects-5.4, may-affects-6.1, may-affects-6.5, may-affects-7.1, may-affects-7.5, may-affects-8.1, may-affects-8.5.

In response to this:

/label type-bug

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[yibin87]

/type bug