Refactor OnDemandFeatureView to Inherit from FeatureView for Compute Engine Integration #5531

Is your feature request related to a problem? Please describe.

Currently, OnDemandFeatureView (ODFV) inherits from BaseFeatureView and uses a custom materialization path that bypasses the compute engine.

Describe the solution you'd like

Refactor OnDemandFeatureView to inherit from FeatureView instead of BaseFeatureView. This refactoring would be a great improvement that aligns ODFVs with Feast's compute engine unlocking new capabilities for distributed ODFV processing.