[BugFix] Fix csv converter and chunk column inconsistent in select into outfile (backport #48052)

[mergify]

Why I'm doing:

in some cases, the nullable property between the column in the chunk and _output_expr_ctxs may not be consistent.
for example: order by limit + left outer join

select t1.k1, t1.k2, count(distinct t1.k3) as k33 from t1 left join t2 on t1.k1 = t2.k1 group by t1.k1,t1.k2 order by k33

the result will be wrong if inconsistent.

What I'm doing:

use nullable converter, and process whether the column is nullable in the nullable converter.

Fixes #issue

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr

Bugfix cherry-pick branch check:

• I have checked the version labels which the pr will be auto-backported to the target branch
  • 3.3
  • 3.2
  • 3.1
  • 3.0
  • 2.5

---

This is an automatic backport of pull request #48052 done by [Mergify](https://mergify.com). ## Why I'm doing:

in some cases, the nullable property between the column in the chunk and _output_expr_ctxs may not be consistent.
for example: order by limit + left outer join

select t1.k1, t1.k2, count(distinct t1.k3) as k33 from t1 left join t2 on t1.k1 = t2.k1 group by t1.k1,t1.k2 order by k33

the result will be wrong if inconsistent.

What I'm doing:

use nullable converter, and process whether the column is nullable in the nullable converter.

Fixes #issue

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr

[mergify]

Cherry-pick of 498c39a has failed:

On branch mergify/bp/branch-2.5/pr-48052
Your branch is up to date with 'origin/branch-2.5'.

You are currently cherry-picking commit 498c39a71f.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   be/src/formats/csv/nullable_converter.cpp
	new file:   test/sql/test_sink/R/test_select_into_outfile_csv_inconsistent_converter_and_column
	new file:   test/sql/test_sink/T/test_select_into_outfile_csv_inconsistent_converter_and_column

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   be/src/exec/plain_text_builder.cpp
	both modified:   be/test/formats/csv/nullable_converter_test.cpp

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[mergify]

@mergify[bot]: Backport conflict, please reslove the conflict and resubmit the pr