[opt](nereids) Reuse identical uncorrelated scalar subqueries referencing the same CTE

[LLLLLL302311]

What problem does this PR solve?

Problem Summary:

When a query contains many structurally-identical uncorrelated scalar subqueries
that reference the same CTE (e.g. (SELECT dt FROM deal_dt) repeated hundreds of
times), SubqueryToApply generated one LogicalApply per occurrence. This blew up
the Nereids optimization search space and caused the planner to time out
(Nereids cost too much time), while these queries planned fine on the legacy optimizer.

This PR groups reusable scalar subqueries within the same LogicalFilter/LogicalProject
by (cteId, cte name, projection, data type, nullable) and builds a single Apply for a
representative, letting the other occurrences reuse its output. Correlated subqueries,
subqueries needing type coercion, DISTINCT/multi-column projections and non-CTE
subqueries are excluded to preserve semantics.

Release note

None

Check List (For Author)

• Test

  • Unit Test
  • Regression test
  • Manual test
  • No need to test or manual test.

• Behavior changed:

  • No.

• Does this need documentation?

  • No.

[hello-stephen]

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Please clearly describe your PR:

1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
3. What features were added. Why was this function added?
4. Which code was refactored and why was this part of the code refactored?
5. Which functions were optimized and what is the difference before and after the optimization?