[BugFix] Wrong array element type in ORC reader

[rickif]

Why I'm doing:

starrocks/be/src/formats/orc/orc_chunk_reader.cpp

Lines 553 to 554 in d5e2ab3

	_fill_functions[src_index](cvb, col, 0, _batch->numElements, slot_desc->type(),
	_root_selected_mapping->get_column_id_or_child_mapping(src_index).orc_mapping, this);

starrocks/be/src/formats/orc/orc_chunk_reader.cpp

Lines 552 to 554 in d5e2ab3

	ColumnPtr& col = (*chunk)->get_column_by_slot_id(slot_desc->id());
	_fill_functions[src_index](cvb, col, 0, _batch->numElements, slot_desc->type(),
	_root_selected_mapping->get_column_id_or_child_mapping(src_index).orc_mapping, this);

The _fill_functions are built recursively, and the lower level incorrectly use the _src_slot_descriptors as input.
What I'm doing:
This PR corrects this issue.
Fixes #39234

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
  • 3.2
  • 3.1
  • 3.0
  • 2.5

[rickif]

@Mergifyio rebase

[mergify]

rebase

✅ Branch has been successfully rebased

[github-actions]

[FE Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[BE Incremental Coverage Report]

❌ fail : 0 / 1 (00.00%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	src/formats/orc/orc_chunk_reader.cpp	0	1	00.00%	[553]

[wanpengfei-git]

@Mergifyio backport branch-2.5

[mergify]

backport branch-2.5

✅ Backports have been created

• Backport to branch branch-2.5 not needed, change already in branch branch-2.5