[BugFix] remain unsupported operator when dict mapping rewrite (backport #42230)

[mergify]

This is an automatic backport of pull request #42230 done by Mergify.
Cherry-pick of b36f084 has failed:

On branch mergify/bp/branch-2.5/pr-42230
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Changes to be committed:
	modified:   fe/fe-core/src/main/java/com/starrocks/sql/optimizer/rule/tree/DictMappingRewriter.java
	modified:   fe/fe-core/src/test/java/com/starrocks/sql/plan/LowCardinalityTest.java

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   test/sql/test_low_cardinality/R/test_low_cardinality
	deleted by us:   test/sql/test_low_cardinality/T/test_low_cardinality

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

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## Why I'm doing: fails in `Preconditions.checkState(usedColumns.cardinality() == 1);` ``` java.lang.IllegalStateException: null at com.google.common.base.Preconditions.checkState(Preconditions.java:496) ~[spark-dpp-1.0.0.jar:?] at com.starrocks.sql.optimizer.rule.tree.DictMappingRewriter.rewriteAsDictMapping(DictMappingRewriter.java:67) ~[starrocks-fe.jar:?] at com.starrocks.sql.optimizer.rule.tree.DictMappingRewriter.rewrite(DictMappingRewriter.java:46) ~[starrocks-fe.jar:?] at com.starrocks.sql.optimizer.rule.tree.AddDecodeNodeForDictStringRule$DecodeVisitor.rewriteOneScalarOperatorForProjection(AddDecodeNodeForDictStringRule.java:560) ~[starrocks-fe.jar:?] at ```

What I'm doing:

For sql:

SELECT if( S_ADDRESS = 'a' , 'a' , SUBSTR(MD5(S_ADDRESS), 1, 8) END AS value FROM supplier;

When rewriting the nested function, S_ADDRESS = 'a' can apply dict with hasApplied = true, SUBSTR(MD5(S_ADDRESS), 1, 8) has unsupported func and its rewrite result is SUBSTR(MD5(dict_mapping(S_ADDRESS)), 1, 8) with hasApplied = false and disableApplied = false .
For the if function, the rewrite context is hasApplied = true and disableApplied = false , it choose the wrong rewrite branch.

for (int i = 0; i < children.size(); i++) {
                    context.reset();
                    children.set(i, children.get(i).accept(this, context));
                    hasApplied = hasApplied || context.hasAppliedOperator;
                    disableApplied = disableApplied || context.hasUnsupportedOperator;
                }
                if (!disableApplied || !hasApplied) {
                    context.hasAppliedOperator = hasApplied;
                    return operator;
                } else {
                    context.hasAppliedOperator = false;
                    return visit(operator, context);
                }

We need to propagate the hasUnsupportedOperator to the outer to ensure the scalarOperator with hasApplied child and has unsuppored child to do dict mapping process again.

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 b36f084 has failed:

On branch mergify/bp/branch-2.5/pr-42230
Your branch is up to date with 'origin/branch-2.5'.

You are currently cherry-picking commit b36f0840cc.
  (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:   fe/fe-core/src/main/java/com/starrocks/sql/optimizer/rule/tree/DictMappingRewriter.java
	modified:   fe/fe-core/src/test/java/com/starrocks/sql/plan/LowCardinalityTest.java

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   test/sql/test_low_cardinality/R/test_low_cardinality
	deleted by us:   test/sql/test_low_cardinality/T/test_low_cardinality

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

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud