Currently, run-time sync step-down in WT is not fully tested in test/suite. In order to step-down the node is simply restarted. As a prerequisite for ASYNC step-down, we need to replace this crash/restart behavior with an "elegant" synchronous step-down.

In this phase, synchronous step-down will be executed purely by calling reconfigure(role=follower).

Acceptance Criteria / Tasks:

• Modify existing step-down code paths for all python disagg tests in test/suite to step down elegantly using reconfigure(role=follower) instead of restarting.