[Core][Bug Fix] Do not start the http server if include_dashboard is False.

[rkooo567]

Signed-off-by: SangBin Cho rkooo567@gmail.com

Why are these changes needed?

Currently, when the include_dashboard is False, there are 2 issues.

1. From the output of ray.init & ray start, we still prints the dashboard URL.
2. Although we properly disabled all the modules, we start the HTTP server (which means users can still access the UI although it doesn't work).

This PR fixes both issues.

Related issue number

Closes #31465

Checks

• I've signed off every commit(by using the -s flag, i.e., git commit -s) in this PR.
• I've run scripts/format.sh to lint the changes in this PR.
• I've included any doc changes needed for https://docs.ray.io/en/master/.
• I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
• Testing Strategy
  • Unit tests
  • Release tests
  • This PR is not tested :(

[rickyyx]

Seems there is some failures though?

via GIPHY

[rickyyx]

nit: should we keep the argument name consistent with serve_frontend? e.g. no-serve-frontend?