[PM-17777] sponsorships consume seats (#5694)

* Admin initiated sponsorships now use seats similarly to inviting an organization user

* Updated f4e endpoint to not expect a user ID, and instead just send a boolean

* Fixed failing tests

* Updated OrganizationUserReadOccupiedSeatCountByOrganizationIdQuery to ensure both left and right sides are selecting the same columns

util/Migrator/DbScripts/2025-04-22_00_UpdateOrgUserReadOccupiedSeatCountProcedure.sql

@@ -0,0 +1,32 @@
+-- Update OrganizationUser_ReadOccupiedSeatCountByOrganizationId to include admin-initiated sponsorships
+-- Based on https://bitwarden.atlassian.net/browse/PM-17772
+IF OBJECT_ID('[dbo].[OrganizationUser_ReadOccupiedSeatCountByOrganizationId]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[OrganizationUser_ReadOccupiedSeatCountByOrganizationId]
+END
+GO
+
+CREATE PROCEDURE [dbo].[OrganizationUser_ReadOccupiedSeatCountByOrganizationId]
+    @OrganizationId UNIQUEIDENTIFIER
+AS
+BEGIN
+    SET NOCOUNT ON
+    
+    SELECT
+        (
+            -- Count organization users
+            SELECT COUNT(1)
+            FROM [dbo].[OrganizationUserView]
+            WHERE OrganizationId = @OrganizationId
+            AND Status >= 0 --Invited
+        ) + 
+        (
+            -- Count admin-initiated sponsorships towards the seat count
+            -- Introduced in https://bitwarden.atlassian.net/browse/PM-17772
+            SELECT COUNT(1)
+            FROM [dbo].[OrganizationSponsorship]
+            WHERE SponsoringOrganizationId = @OrganizationId
+            AND IsAdminInitiated = 1
+        )
+END
+GO