[BUG] Azure Sentinel 50gb CapacityReservation not supported

### API Spec link

https://learn.microsoft.com/en-us/rest/api/loganalytics/workspaces/create-or-update?view=rest-loganalytics-2025-02-01&tabs=HTTP#capacityreservationlevel

### API Spec version

2025-02-01

### Describe the bug

The 2025-02-01 API spec for loganalytics/workspaces does not support the newly introduced 50gb capacity reservation level.

See 50gb preview tier: https://www.microsoft.com/en-us/security/pricing/microsoft-sentinel

Latest API Spec lacks a 50 gb capacityreservationlevel: https://learn.microsoft.com/en-us/rest/api/loganalytics/workspaces/create-or-update?view=rest-loganalytics-2025-02-01&tabs=HTTP#capacityreservationlevel

### Expected behavior

Specifying a Azure Log Analytics Workspace CapacityReservationLevel of 50 should set the Workspace to a 50gb reservation.

### Actual behavior

Error:

`Status=400 Code="InvalidInput" Message="CapacityReservationLevel must be an allowed value: [GB100,GB200,GB300,GB400,GB500,T1,T2,T5,T10,T25,T50].`

### Reproduction Steps

Deploy or update an existing workspace with `CapacityReservationLevel == 50`

### Environment

_No response_

Start by locating the Log Analytics workspaces create-or-update specification for API version 2025-02-01 and compare its CapacityReservationLevel values with the linked Microsoft API documentation. Reproduce the workspace deployment or update using CapacityReservationLevel 50; done means the specification accepts the 50GB reservation level without the reported validation error.

Written by the indexing model from the issue text.