[P0] Update GitHub triage bot to use the data source of truth

o The new centralized source of truth should not prevent GitHub issue assignment from working across all repos our team manages. The current system for issue assignment and codeowners should be expanded or adapted to work not only with SDK repos but also with non-SDK repos like Azure MCP and azd. This ensures consistency and scalability as more tools are added. We should not make issue assignment dependent on the release planner ADO information architecture. If the system becomes tightly coupled with release planner ADO architecture, it risks losing functionality for repos that don’t integrate with it. Each repo should retain a section for non-service-library codeowners that is not touched by automation to protect flexibility for teams managing other types of content or tools. Therefore, the solution should be agnostic to repo type (SDK or tools) so that the same issue triage and codeowners logic can apply universally