[refine](storage) deduplicate in-list predicate creator by extracting shared impl header

[Mryange]

What problem does this PR solve?

Issue Number: N/A

Problem Summary:
predicate_creator_in_list_in.cpp and predicate_creator_in_list_not_in.cpp each
contained an identical create_in_list_predicate_impl helper and a 20+ case
primitive-type switch, differing only in the PredicateType::IN_LIST vs
PredicateType::NOT_IN_LIST template argument. Any new supported type or CHAR-handling
change had to be synchronized across both files.

This PR extracts the shared template body into
predicate_creator_in_list_impl.h. Each .cpp file now only contains a single
explicit instantiation, keeping parallel compilation intact. The switch is further
simplified by replacing the scalar cases with dispatch_switch_scalar, leaving only
three string-type cases (TYPE_CHAR, TYPE_VARCHAR, TYPE_STRING) that cannot be
collapsed because they carry distinct template arguments or a runtime char_length.

Release note

None

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[Mryange]

/review

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