Improvements

• Support automatically selecting the fastest object for transfer when evicting the leader, which helps speed up the eviction process #4229
• Forbid deleting a voter from a 2-replica Raft group in case that the Region becomes unavailable #4564
• Speed up the scheduling of the balance leader #4652

Bug Fixes

• Fix the issue that the operator creates steps with meaningless Joint Consensus #4362 #4444
• Fix a bug that the TSO revoking might get stuck when closing the PD client #4549
• Fix the issue that the Region scatterer scheduling might cause lost peers #4565
• Fix the issue that Duration fields of dr-autosync cannot be dynamically configured #4651