Issue Summary

The test test_layered27.py currently uses a workaround to skip checkpoint close during shutdown by reconfiguring the connection with disaggregated=(role=follower). With the introduction of a new debug option in WT-16878, this workaround is no longer necessary.

Context

• The new debug option to skip checkpoint close during shutdown was added in WT-16878.
• The current workaround in test_layered27.py is implemented as follows:

  self.conn.reconfigure(f'disaggregated=(role=follower)') # Prevent checkpoint during close.
  

• Reference to the relevant code: test_layered27.py#L107

Proposed Solution

Update test_layered27.py to use the new debug option for skipping checkpoint close during shutdown, removing the existing workaround.

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