[Enhancement] enable shared scan when doing insert

[dirtysalt]

Why I'm doing:

#12070

In this pr, for insert SQL stmt, it forces to use "scan rangers per driver seq"

                if (targetTable instanceof OlapTable) {
                    sinkFragment.setHasOlapTableSink();
                    sinkFragment.setForceAssignScanRangesPerDriverSeq();

And in backend code, if set "scan ranges per drive seq", then backend can not use shared scan any more.

But for external table, there is no sense of "scan ranges per drive seq" at all. So for scan node which has property of "always shared scan", we still use shared scan.

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
  • 3.5
  • 3.4
  • 3.3
  • 3.2
  • 3.1

[dirtysalt]

I don't know why, but when executing following command

create table t1 as select * from files("path"="hdfs://emr-header-1.cluster-49091:9000/starrocks_test_data/system_data/test_files//all_right.csv,hdfs://emr-header-1.cluster-49091:9000/starrocks_test_data/system_data/test_fil
es//test_push_down_int.csv", "format"="csv","csv.column_separator" = "|" ,"auto_detect_sample_files"="1")

the table t1 is empty. I think it's related to sink operator's requirement.

I'm gonna to put this feature off a bit, since there is no impact right now.

[github-actions]

[FE Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[Java-Extensions Incremental Coverage Report]

✅ pass : 0 / 0 (0%)

[github-actions]

[BE Incremental Coverage Report]

✅ pass : 1 / 1 (100.00%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
🔵	be/src/exec/scan_node.cpp	1	1	100.00%	[]