Fix: Resolve infinite loading in Map when resource API is unavailable

[tejhan]

Description

This PR resolves an issue where the Map would enter an infinite loading state when a selected resource filter references an API that isn't installed on the cluster (e.g. Gateway API). The useData() hook inmakeKubeSource treated errored requests the same as in-progress ones (null), causing the Map to think the data was still loading forever.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Code refactoring
• CI/CD changes
• Other: **___**

Related Issues

Closes:

• [BUG] gateway API link doesn't work in map #514

Changes Made

• In makeKubeSource, we check the error returned by useList(). If the request errors (ex 404 for a missing API), return { nodes: [] } instead of null so the Map treats it as loaded with no results rather than still loading. For an inclusive filter, this is expected behavior.

Testing

1. Connect to a cluster without Gateway API installed.
2. Open Map.
3. Check the Gateway (Beta) filter.
4. Observe the map loads normally (no infinite spinner) — gateway section simply shows no resources.

[Copilot]

Pull request overview

This PR aims to prevent the Resource Map from entering an infinite loading state when users enable the Gateway (beta) filter on clusters that don’t have the necessary Gateway API CRDs installed, by conditionally hiding that filter based on CRD presence.

Changes:

• Adds a CRD-based existence check for the gateway.networking.k8s.io API group.
• Conditionally includes the Gateway (beta) source/filter only when the Gateway API is detected.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.