[TEST][FLAKY] auto_scheduler layout rewrite tests

[comaniac]

Two tests introduced by #6750 have been disabled by #6841 due to flaky. It'd be better to resolve the root cause and re-open them.

Reference failures:
https://ci.tlcpack.ai/blue/organizations/jenkins/tvm/detail/main/124/pipeline

cc @jcf94 @merrymercy

[masahi]

it's being worked on at #6830

[comaniac]

Ah thanks for the connection. Then we can close this issue once #6830 is merged.