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/httpmw/organizationparam_test.go

@@ -152,7 +152,7 @@ func TestOrganizationParam(t *testing.T) {
 		_ = dbgen.OrganizationMember(t, db, database.OrganizationMember{
 			OrganizationID: organization.ID,
 			UserID:         user.ID,
-			Roles:          []string{rbac.RoleOrgMember(organization.ID)},
+			Roles:          []string{rbac.ScopedRoleOrgMember(organization.ID)},
 		})
 		_, err := db.UpdateUserRoles(ctx, database.UpdateUserRolesParams{
 			ID:           user.ID,