fix(frontend): allow INCLUDE payload without other columns

[xiangjinwu]

I hereby agree to the terms of the RisingWave Labs, Inc. Contributor License Agreement.

What's changed and what's your intention?

Since #18437 we have supported INCLUDE payload to ingest the whole json payload as a single jsonb column:

create [source | table] my_source (
  foo varchar,
  bar int)
include payload as root
with (...)
format plain encode json;

However, when there is no need to extract foo or bar, an empty column list would result in the following error:

Schema definition is required, either from SQL or schema registry.

This PR enables such usage by moving the empty column list check after handling INCLUDE additional columns.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added test labels as necessary. See details.
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

• My PR needs documentation updates. (Please use the Release note section below to summarize the impact on users)

Release note

If this PR includes changes that directly affect users or other significant modifications relevant to the community, kindly draft a release note to provide a concise summary of these changes. Please prioritize highlighting the impact these changes will have on users.

[xiangjinwu]

The latest_col_id.next() logic was wrong #13707 because it always returns the same value in this while loop given latest_col_id is not mut. The actual column id is assigned in the caller after calling handle_addition_columns.

[xxchan]

Looks great!

random thoughts: Maybe we should rename bind_all_columns, or move handle_addition_columns into it.

[chenzl25]

LGTM！