Add test: Log entry agreement 3

[suhasks123]

Overview:

This is an extension to Log entry agreement 2, where the leader that is about to crash has diverged from the main system in terms of the log entries.

Procedure:

• Simulate a situation where the leader adds new log entries and crashes before committing them by confirming the majority.
• A new leader has been selected and new log entries are added to the system.
• Now, the entries in the system and the former leader have diverged.
• Bring the leader back online and wait for the entries to be synchronized.
• Then, check if all the replicas agree on the new log entries that were created after the crash of the initial leader.