Disable parallel replicas by default when analyzer

Why it matters

This feature ensures that parallel replicas execution is disabled by default if the analyzer is off, preventing potential inconsistencies or unexpected behavior. It gives users more predictable query execution behavior and ensures safer default settings while still allowing explicit configuration.

How to use it

When the analyzer is disabled, parallel replicas are disabled by default. To override this behavior, explicitly set the setting parallel_replicas_only_with_analyzer to false in your configuration or query.