Fix bug in B+ Tree algorithm causing random operation test failures

[M-SaaD-H]

There is a bug in the B+ Tree algorithm implementation that causes the random operations tests in the BPlusTreeTests.java file to fail. Please investigate the root cause of these failures and provide a fix to ensure all random operation tests pass successfully.

Steps to reproduce:

1. Run the test suite in BPlusTreeTests.java.
2. Observe failures in tests involving random operations.

Expected behavior:

• All tests in BPlusTreeTests.java should pass, including those involving random operations.

Actual behavior:

• Tests related to random operations are currently failing.

Additional notes:

• Focus on debugging the B+ Tree algorithm logic and edge cases that may affect random operation sequences.
• You may want to add more logging or assertions to identify the problem area
• Most probably, the bug is in the BPlusTree.java file only.

Label: bug