Add support for dashboard listening on any IP

[JamesNK]

Description

While looking at #5940, I noticed that Aspire dashboard docker container used http://0:0:0:0:8080 at its binding in the dockerfile instead of http://+:8080 like all other containers are configured.

The reason is the dashboard doesn't support ASP.NET Core's "any IP" syntax. Fixed in this PR.

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
• Does the change require an update in our Aspire docs?
  • Yes
    • Link to aspire-docs issue:
  • No

Microsoft Reviewers: Open in CodeFlow

[JamesNK]

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