Add state to MCP profile and refactor contract filter

Add the profile state attribute (ACTIVE/INACTIVE) to the MCP
Profile schema so listUsers and getUser tools expose it, and
add a state filter to listUsers.

Rename excludeContractEnded to contractEnded across the entire
stack (MCP, GraphQL, CLI, frontend). The new boolean is two-way:
true returns only users with ended contracts, false returns only
users with active or no contract, and null returns all.

Signed-off-by: Émile Ré <emile@getprobo.com>

pkg/server/api/console/v1/graphql/organization.graphql

@@ -52,7 +52,7 @@ input ProfileOrder
 }
 
 input ProfileFilter {
-    excludeContractEnded: Boolean
+    contractEnded: Boolean
 }
 
 type ProfileConnection