stream-server: point to stream-server container in registry

[james-rms]

Public-Facing Changes

Description

• https://github.com/foxglove/data-platform/pull/1098 inadvertently changed the destination path of the stream server image from stream-service to stream-server. This is the only docker image where the image has a different name from the underlying binary. It's a small difference and was missed. However, this is causing the helm chart to fail to launch the stream server:

j@192-168-1-105 helm-charts % docker run us-central1-docker.pkg.dev/foxglove-images/images/stream-service:083ea7cd15e5ca942125c5a3efaf0caa6fbd5d3e   
Unable to find image 'us-central1-docker.pkg.dev/foxglove-images/images/stream-service:083ea7cd15e5ca942125c5a3efaf0caa6fbd5d3e' locally
docker: Error response from daemon: manifest for us-central1-docker.pkg.dev/foxglove-images/images/stream-service:083ea7cd15e5ca942125c5a3efaf0caa6fbd5d3e not found: manifest unknown: Failed to fetch "083ea7cd15e5ca942125c5a3efaf0caa6fbd5d3e".
See 'docker run --help'.

This PR changes the image path in the helm chart, which is the least-invasive change i believe will cause this to start working again.