Add orbit settings alias for knowledge_graph
What does this MR do and why?
This adds orbit as the primary Rails settings section for Orbit while keeping knowledge_graph as a backward-compatible alias. Both names reference the same settings object, so existing source and Omnibus configurations continue to work while new configurations can use the rebranded name.
A draft backport to 19-2-stable-ee will follow once this merge request is approved.
References
Screenshots or screen recordings
Not applicable.
How to set up and validate locally
bundle exec rspec spec/initializers/1_settings_spec.rb
bundle exec rubocop config/initializers/1_settings.rb spec/initializers/1_settings_spec.rbMR acceptance checklist
Evaluate this MR against the MR acceptance checklist.