Support resource restart in ResourceHealthCheckService

[JamesNK]

Description

Changes:

• Health checks are stopped when the resource is in a terminal state, e.g. exited, finished.
• Health checks can be restarted after stopped.
• ResourceReadyEvent is now fired the first time a resource becomes ready after starting. That means restarting a resource and it becoming healthy again causes ResourceReadyEvent to fire again.

Fixes #6385
Fixes #6450
Fixes #7011

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
    • Is this introducing a breaking change?
      • Yes
        • Link to aspire-docs issue (please use this breaking-change template):
      • No
        • Link to aspire-docs issue (please use this doc-idea template):
  • No