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.

coderd/members.go

@@ -68,7 +68,7 @@ func convertOrganizationMember(mem database.OrganizationMember) codersdk.Organiz
 	}
 
 	for _, roleName := range mem.Roles {
-		rbacRole, _ := rbac.RoleByName(roleName)
+		rbacRole, _ := rbac.RoleByName(rbac.RoleName(roleName, mem.OrganizationID.String()))
 		convertedMember.Roles = append(convertedMember.Roles, db2sdk.SlimRole(rbacRole))
 	}
 	return convertedMember