Allow routing secrets endpoints via SelectCluster

[katrogan]

Why are the changes needed?

Required for secure environments.

What changes were proposed in this pull request?

See title

How was this patch tested?

Used corresponding SDK changes and ran a flyte demo cluster locally.

flyte --config .flyte/config-oss-local.yaml create secret katrina-dp-test
...
flyte --config .flyte/config-oss-local.yaml get secret
                                                                                                     Secrets                                                                                                     
┌───────────────────┬────────────────┬──────────────────────────────────┬──────────────────┬──────────────────────────────────────────┬──────────────────────────────┬──────────────────────────────────────────┐
│ Project           │ Domain         │ Name                             │ Type             │ Created_time                             │ Status                       │ Cluster_status                           │
╞═══════════════════╪════════════════╪══════════════════════════════════╪══════════════════╪══════════════════════════════════════════╪══════════════════════════════╪══════════════════════════════════════════╡
│ -                 │ -              │ katrina-dp-test                  │ regular          │ 2026-04-21T08:04:45                      │ FULLY_PRESENT                │ flyte-demo: PRESENT                      │
└───────────────────┴────────────────┴──────────────────────────────────┴──────────────────┴──────────────────────────────────────────┴──────────────────────────────┴──────────────────────────────────────────┘

Labels

Please add one or more of the following labels to categorize your PR:

• added: For new features.
• changed: For changes in existing functionality.
• deprecated: For soon-to-be-removed features.
• removed: For features being removed.
• fixed: For any bug fixed.
• security: In case of vulnerabilities

This is important to improve the readability of release notes.

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

- `main` <!-- branch-stack -->
  - \#6583
    - **Route secrets endpoints to operator dataproxy** :point\_left:

• main
  • Flyte 2 #6583
    • Allow routing secrets endpoints via SelectCluster 👈