fix(adminfront): resolve biome noNonNullAssertion lint in TenantSchemaPage

adminfront/src/features/tenants/routes/TenantSchemaPage.tsx

@@ -104,7 +104,7 @@ export function TenantSchemaPage() {
       newConfig.loginIdField = undefined;
       newConfig.userSchema = newFields;
 
-      return updateTenant(tenantId!, {
+      return updateTenant(tenantId, {
         config: newConfig,
       });
     },