[Extensibility Request] Enums 340 "Reservation Planning Flexibility" and 341 "Inventory Planning Flexibility" request to make extensible.

[OSH-ZT]

Describe the request

We would like to request making these enums Extensible = true;

Additional context

We need to add our own values to these enums to support our handling of Inventory Planning functionality. Thank you.
Internal work item: AB#561472

[OSH-ZT]

I forgot to mention that we use the BC25 cu02 W1 On-Prem version.