Fix integer overflow with max limit & batchsize

[rozza]

Eliminate unnecessary killCursors command when batchSize == limit can overflow if using Integer.MAX_VALUE for both.

JAVA-5667
JAVA-5970

[Copilot]

Pull Request Overview

This PR fixes an integer overflow issue in the FindOperation when both batchSize and limit are set to Integer.MAX_VALUE. The fix prevents incrementing the effective batch size when it would cause overflow, eliminating unnecessary killCursors commands.

• Adds overflow protection in FindOperation.getCommand() by checking that effectiveBatchSize is less than Integer.MAX_VALUE before incrementing
• Adds comprehensive unit tests to validate the behavior with various combinations of batchSize and limit values including edge cases with Integer.MAX_VALUE

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
FindOperation.java	Adds overflow check to prevent incrementing batch size when it equals Integer.MAX_VALUE
FindOperationUnitSpecification.groovy	Adds unit test covering batch size and limit combinations including Integer.MAX_VALUE edge cases

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