Mismatched ESM and CommonJS causes query ref assertion failure

`@apollo/client-integration-react-router` is intended to be used with the React Router framework which uses the Vite build system.

While this repository’s packages are ESM, `@apollo/client `is packaged as CommonJS. It must be included in the Vite `noExternal` configuration for React Router projects to apply CommonJS transformations.

However, if this repository’s packages are not marked `noExternal` as well, mixing CommonJS and ESM results in the assertion failure `Expected a QueryRef object, but got something else instead` when using `@apollo/client` hooks which operate on transported query refs like `useReadQuery`.

Review the Vite noExternal configuration for React Router projects and the packaging boundary between this repository’s ESM packages and @apollo/client’s CommonJS package. Reproduce the useReadQuery transported-query-ref assertion, then verify that the configuration change prevents the ESM/CommonJS mismatch.

Written by the indexing model from the issue text.