[data] Add function arg params to map and flat_map

[Zandew]

Why are these changes needed?

Adds fn_args, fn_kwargs, fn_constructor_kwargs to Dataset.map and Dataset.flat_map, making it them have the same interface as Dataset.map_batches (other than batch specific args).

Related issue number

Closes #38763

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 added any new APIs to the API Reference. For example, if I added a
    method in Tune, I've added it in doc/source/tune/api/ under the
    corresponding .rst file.
• 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 :(

[scottjlee]

@c21 to review and merge, thanks!

[c21]

LGTM