test: remove wait param in correctness test

[sgbalogh]

In the antithesis setup we run test_correctness, but it's possible for a read to hit the 60 second wait period in this environment before either reading all 1024 appended records (in the first case) or catching up (in the second).

[greptile-apps]

Greptile Summary

This PR updates the correctness tests to use the read session’s default waiting behavior.

• Removes the explicit 60-second wait from the concurrent append/read correctness test.
• Removes the explicit 60-second wait from the caught-up-state correctness test.

Confidence Score: 5/5

The PR appears safe to merge because no blocking failure remains within the eligible follow-up review scope.

No blocking failure remains.

Important Files Changed

Filename	Overview
tests/test_correctness.py	Removes explicit read-session wait values from two asynchronous correctness tests.

_{Reviews (2): Last reviewed commit: "remove wait param in correctness test" | Re-trigger Greptile}