refactor: Simplify duplicated simulation and improve test condition

[jollidah]

1. Simplify duplicated situation(leaving leader) with for loop
2. Develop test conditions:
   • Before code change:
     1. Validate leader_id
     2. Validate cluster size
   • After code change:
     1. Validate leader_id
     2. Validate cluster size
     3. Validate follower’s term
     4. Track raw node's StateRole change

[jopemachine]

Is there a reason why the counting needs to be executed multiple times for 1 second, rather than just once after a 1-second delay?

[jollidah]

I use a loop because the tick interval is unpredictable, so repeatedly checking within the 2-second window ensures we capture all relevant state changes.

[jopemachine]

tick_interval is fixed.
If you mean to election_tick, we can fix it using min_election_tick and max_election_tick.

[jollidah]

Currently, tick_interval is fixed in this test. We need to modify it to handle varying tick_interval values

[jopemachine]

I think collect_state_matching_rafts_until_leader_emerge is verbose and performs too many tasks.
I think it would be better to separate the functionality of returning rafts that match a specific state and waiting for a leader to emerge.