[BugFix] Fix UDTF wrong result when miss multibyte UTF-8

[stdpain]

Why I'm doing:

introduced by #50615

mysql> select * from TABLE(udtfstring("中文"))
    -> ;
+------------+
| udtfstring |
+------------+
|            |
|            |
+------------+
2 rows in set (0.10 sec)

expected:

mysql> select * from TABLE(udtfstring("中文测试"));
+--------------+
| udtfstring   |
+--------------+
| 中文测试     |
| 中文测试     |
+--------------+

What I'm doing:

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

[github-actions]

[Java-Extensions Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[FE Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

@Mergifyio backport branch-3.3

[github-actions]

@Mergifyio backport branch-3.2

[github-actions]

@Mergifyio backport branch-3.1

[github-actions]

@Mergifyio backport branch-3.0

[mergify]

backport branch-3.3

✅ Backports have been created

• #51234 [BugFix] Fix UDTF wrong result when miss multibyte UTF-8 (backport #51232) has been created for branch branch-3.3

[mergify]

backport branch-3.2

✅ Backports have been created

• #51235 [BugFix] Fix UDTF wrong result when miss multibyte UTF-8 (backport #51232) has been created for branch branch-3.2

[mergify]

backport branch-3.1

✅ Backports have been created

• #51236 [BugFix] Fix UDTF wrong result when miss multibyte UTF-8 (backport #51232) has been created for branch branch-3.1

[mergify]

backport branch-3.0

✅ Backports have been created

• #51237 [BugFix] Fix UDTF wrong result when miss multibyte UTF-8 (backport #51232) has been created for branch branch-3.0 but encountered conflicts

[github-actions]

[BE Incremental Coverage Report]

✅ pass : 4 / 4 (100.00%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	be/src/udf/java/java_udf.cpp	4	4	100.00%	[]

[stdpain]

https://github.com/Mergifyio backport branch-3.3.4

[mergify]

backport branch-3.3.4

✅ Backports have been created

• #51459 [BugFix] Fix UDTF wrong result when miss multibyte UTF-8 (backport #51232) has been created for branch branch-3.3.4