…son_by_line (#55861)

### What problem does this PR solve?

Issue Number: close #xxx

Related PR:
[doc-2874](apache/doris-website#2874)

Problem Summary:

For the read_json_by_line and strip_outer_array parameters, considering
that the first parameter will gradually be deprecated in the future, and
some users may forget to specify these two parameters when importing
JSON files, I will modify the default behavior of these two parameters:
if the user does not specify values for these two parameters, the
default setting for read_json_by_line will be true.

Behavior patterns after this PR:

1、In scenarios such as S3 load, since read_json_by_line is not only
related to importing JSON formats but also serves as the switch for
streaming JSON file reading, it will be hardcoded to true (thus, JSON
formats requiring this parameter to be false are not supported in such
environments).
2、In scenarios such as Stream Load, users have absolute freedom to
specify any combination of parameter values (though typically we do not
expect users to actively set either to false).

### Release note

None

### Check List (For Author)

- Test <!-- At least one of them must be included. -->
    - [x] Regression test
    - [ ] Unit Test
    - [ ] Manual test (add detailed scripts or steps below)
    - [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
        - [ ] Previous test can cover this change.
        - [ ] No code files have been changed.
        - [ ] Other reason <!-- Add your reason?  -->

- Behavior changed:
    - [x] No.
    - [ ] Yes. <!-- Explain the behavior change -->

- Does this need documentation?
    - [x] No.
- [ ] Yes. <!-- Add document PR link here. eg:
apache/doris-website#1214 -->

### Check List (For Reviewer who merge this PR)

- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR
should merge into -->