chore(chart): claim Full Lifecycle on Artifact Hub

[be0x74a]

Summary

Bumps artifacthub.io/operatorCapabilities from Basic Install to Full Lifecycle (level 3 of 5 on the Operator Capability Levels ladder).

Why this is honest, not aspirational

Level 3 — Full Lifecycle — requires drift reconciliation, app lifecycle management, and cleanup. The controller already implements all three:

• Drift correction — every reconcile rebuilds the destination from the live source view (stripping server-owned metadata, applying overlay, stamping ownership), so manual edits to a destination are reverted on the next event.
• Finalizer-driven cleanup — Reconcile registers a finalizer; on Projection deletion it scans every namespace for owned destinations (necessary for namespaceSelector projections) and removes them before releasing the finalizer.
• Stale-destination cleanup — when a namespaceSelector stops matching a namespace, the controller deletes the destination there even though the Projection itself isn't being deleted.

Level 2 (Seamless Upgrades) is also covered: only one CRD version (v1) exists, so no conversion webhook is needed, and chart upgrades are Helm-managed.

What this does not claim

Level 4 (Deep Insights) intentionally stays off the table for now — the controller exposes projection_reconcile_total and projection_watched_gvks plus a ServiceMonitor, but ships no PrometheusRule with alerts. That's the natural next step.

Test plan

• Helm-lint / chart-test CI jobs stay green.
• After release, confirm the badge on https://artifacthub.io/packages/helm/projection-operator/projection renders as Full Lifecycle.