CoreFeature at METHOD granularity must reinit repository

CoreFeature with @RepositoryConfig at METHOD granularity does not correctly reinitialize the repository before each method

For instance that the content template are not re-created.

The is because the fireApplicationStarted runtime event can only be called once per Nuxeo Runtime init, so the repository's initialization handler is not called again (but it should because at METHOD granularity the repository is cleared each time).