fix(manifests): wire and correct MCP sidecar image name in mpp-openshift overlay (#1273)

## Summary

- Wires the `ambient-mcp` sidecar into the mpp-openshift control-plane
deployment (`MCP_IMAGE` + `MCP_API_SERVER_URL` env vars)
- Corrects the MCP sidecar image name from `vteam_ambient_mcp`
(non-existent) to `vteam_mcp` (the actual Quay repo)
- Adds `vteam_mcp` to the kustomize image override block
- Downgrades SSE tap yield-event log from INFO to DEBUG to reduce log
noise

Fixes `ImagePullBackOff` on runner pods in mpp-openshift caused by the
wrong image name.

## Test plan

- [ ] Deploy mpp-openshift overlay and confirm runner pods start without
`ImagePullBackOff`
- [ ] Confirm MCP sidecar container is present in runner pod spec
- [ ] Confirm `MCP_IMAGE=quay.io/ambient_code/vteam_mcp:latest` in
control-plane deployment env

🤖 Generated with [Claude Code](https://claude.ai/code)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

## Release Notes

* **Chores**
* Updated container image configuration for the ambient control plane
deployment.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: Ambient Code Bot <bot@ambient-code.local>
Co-authored-by: Claude <noreply@anthropic.com>

Author: 3 people

components/manifests/overlays/mpp-openshift/ambient-control-plane.yaml

@@ -83,7 +83,7 @@ spec:
             - name: CP_TOKEN_URL
               value: "http://ambient-control-plane.ambient-code--ambient-s0.svc:8080/token"
             - name: MCP_IMAGE
-              value: "quay.io/ambient_code/vteam_ambient_mcp:latest"
+              value: "quay.io/ambient_code/vteam_mcp:latest"
             - name: MCP_API_SERVER_URL
               value: "http://ambient-api-server.ambient-code--runtime-int.svc:8000"
           volumeMounts:

components/manifests/overlays/mpp-openshift/kustomization.yaml

@@ -39,5 +39,5 @@ images:
 - name: quay.io/ambient_code/vteam_control_plane:latest
   newName: quay.io/ambient_code/vteam_control_plane
   newTag: latest
-- name: quay.io/ambient_code/vteam_ambient_mcp
+- name: quay.io/ambient_code/vteam_mcp
   newTag: latest