Fix Durable Task emulator task hub dashboard URL

[Irakli Gabisonia (gabisonia)]

Description

Opening a Durable Task Scheduler emulator task hub from the Aspire dashboard currently redirects to an Add Endpoint dialog instead of the hub. Use the emulator's local/emulator identity and /orchestrations route so the generated link opens the task hub directly, while preserving the resolved endpoint and task hub name.

Fixes #20173

Example

For a hub named ZeusOrchestrationHub, the generated path changes from:

/subscriptions/default/schedulers/default/taskhubs/ZeusOrchestrationHub

to:

/subscriptions/local/schedulers/emulator/taskhubs/ZeusOrchestrationHub/orchestrations

Validation

• All 19 DurableTaskResourceExtensionsTests passed. The three new emulator cases failed before the fix and cover default, custom, and parameter-based task hub names. An additional test covers existing schedulers.
• Built an AppHost using the local source projects and ran the real Docker emulator on macOS ARM64. Chromium opened the generated URL directly on the task hub's Orchestrations page, with no endpoint configuration prompt or page errors; all observed API requests returned HTTP 200.

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
      • No
    • Did you add <remarks /> and <code /> elements on your triple slash comments?
      • Yes
      • No
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
    • If yes, have you done a threat model and had a security review?
      • Yes
      • No
  • No

[github-actions]

🚀 Dogfood this PR with:

⚠️ WARNING: Do not do this without first carefully reviewing the code of this PR to satisfy yourself it is safe.

curl -fsSL https://raw.githubusercontent.com/microsoft/aspire/main/eng/scripts/get-aspire-cli-pr.sh | bash -s -- 20180

Or

• Run remotely in PowerShell:

iex "& { $(irm https://raw.githubusercontent.com/microsoft/aspire/main/eng/scripts/get-aspire-cli-pr.ps1) } 20180"