BuzzDB using 2 different probing styles

BuzzDB v27 (and onward) uses quadratic probing for HashTable::insertOrUpdate() but linear probing for HashTable::getValue().  The getValue() should be changed to quadratic probing to make sure the correct value is retrieved.

<img width="644" height="876" alt="Image" src="https://github.com/user-attachments/assets/6827595d-30db-4487-ba15-6043f623c784" />