chore: remove organization_id suffix from org_member roles in database (#13473)

Organization member's table is already scoped to an organization.
Rolename should avoid having the org_id appended.

Wipes all existing organization role assignments, which should not be used anyway.

docs/api/enterprise.md

@@ -1600,7 +1600,8 @@ curl -X PATCH http://coder-server:8080/api/v2/scim/v2/Users/{id} \
   "roles": [
     {
       "display_name": "string",
-      "name": "string"
+      "name": "string",
+      "organization_id": "string"
     }
   ],
   "status": "active",
@@ -1655,7 +1656,8 @@ curl -X GET http://coder-server:8080/api/v2/templates/{template}/acl \
     "roles": [
       {
         "display_name": "string",
-        "name": "string"
+        "name": "string",
+        "organization_id": "string"
       }
     ],
     "status": "active",
@@ -1690,6 +1692,7 @@ Status Code **200**
 | `» roles`            | array                                                    | false    |              |             |
 | `»» display_name`    | string                                                   | false    |              |             |
 | `»» name`            | string                                                   | false    |              |             |
+| `»» organization_id` | string                                                   | false    |              |             |
 | `» status`           | [codersdk.UserStatus](schemas.md#codersdkuserstatus)     | false    |              |             |
 | `» theme_preference` | string                                                   | false    |              |             |
 | `» username`         | string                                                   | true     |              |             |