chore: replace some janus references with RHDH

[christoph-jerolimov]

Hey, I just made a Pull Request!

see diff

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or Updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)

[rhdh-gh-app]

Missing Changesets

The following package(s) are changed by this PR but do not have a changeset:

• @red-hat-developer-hub/backstage-plugin-bulk-import-backend
• @red-hat-developer-hub/backstage-plugin-catalog-backend-module-extensions
• @red-hat-developer-hub/backstage-plugin-lightspeed
• @red-hat-developer-hub/backstage-plugin-orchestrator-form-widgets
• @red-hat-developer-hub/plugin-redhat-resource-optimization-backend
• @red-hat-developer-hub/plugin-redhat-resource-optimization

See CONTRIBUTING.md for more information about how to add changesets.

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
@red-hat-developer-hub/backstage-plugin-bulk-import-backend	workspaces/bulk-import/plugins/bulk-import-backend	none	v6.11.0
@red-hat-developer-hub/backstage-plugin-catalog-backend-module-extensions	workspaces/extensions/plugins/catalog-backend-module-extensions	none	v0.14.2
@red-hat-developer-hub/backstage-plugin-lightspeed	workspaces/lightspeed/plugins/lightspeed	none	v1.2.0
@red-hat-developer-hub/backstage-plugin-orchestrator-form-widgets	workspaces/orchestrator/plugins/orchestrator-form-widgets	none	v1.6.1
@red-hat-developer-hub/plugin-redhat-resource-optimization-backend	workspaces/redhat-resource-optimization/plugins/redhat-resource-optimization-backend	none	v2.0.2
@red-hat-developer-hub/plugin-redhat-resource-optimization	workspaces/redhat-resource-optimization/plugins/redhat-resource-optimization	none	v2.0.1

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[debsmita1]

/lgtm