feat: replace user scim v2 endpoint (#9163)

# Which Problems Are Solved
- Adds support for the replace user SCIM v2 endpoint

# How the Problems Are Solved
- Adds support for the replace user SCIM v2 endpoint under `PUT
/scim/v2/{orgID}/Users/{id}`

# Additional Changes
- Respect the `Active` field in the SCIM v2 create user endpoint `POST
/scim/v2/{orgID}/Users`
- Eventually consistent read endpoints used in SCIM tests are wrapped in
`assert.EventuallyWithT` to work around race conditions

# Additional Context
Part of #8140

internal/api/scim/resources/resource_handler.go

@@ -19,6 +19,7 @@ type ResourceHandler[T ResourceHolder] interface {
 	NewResource() T
 
 	Create(ctx context.Context, resource T) (T, error)
+	Replace(ctx context.Context, id string, resource T) (T, error)
 	Delete(ctx context.Context, id string) error
 	Get(ctx context.Context, id string) (T, error)
 }