Similar to #5350.

Our /readyz will wait for the node to reach the highest Raft commit reported by other peers.

The implementation is wrong. It only waits for that commit to be received, it does not wait for that commit to actually be applied.

All Submissions:

• Contributions should target the dev branch. Did you create your branch from dev?
• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

New Feature Submissions:

1. Does your submission pass tests?
2. Have you formatted your code locally using cargo +nightly fmt --all command prior to submission?
3. Have you checked your code using cargo clippy --all --all-features command?