Display foundational agents/flows in Automate pages by default

Current user experience

When users navigate to the Automate pages within their groups/projects, GitLab's foundational agents and flows don't appear, even though they're available to use.

Problem to solve

Users don't know what agents/flows are available to them when starting out. The empty state provides no path forward and requires users to navigate away to the global catalog to discover what exists. This creates unnecessary friction in the onboarding and discovery experience.

Proposal

When users view the Automate pages (agents or flows) in their project/group, display GitLab's foundational agents/flows as available options. This could be:

• A suggested/recommended section showing foundational items
• The same list they'd see in the catalog, but filtered to foundational items
• Clear CTAs to enable/try these items directly from this view

Open question: Is the current behavior a bug (they should be showing but aren't) or is this behavior by design? Need to investigate and fix accordingly.

Acceptance criteria

• When viewing project/group Automate > user sees GitLab foundational agents
• When viewing project/group Automate > user sees GitLab foundational flows
• Foundational items are clearly labeled as GitLab-provided
• User can enable/activate foundational items directly from this view
• If current behavior is a bug, root cause is identified and fixed