Refactor: Update replace_with_order_preserving_variants tests to use insta snapshots for easier updates (#17962)

* Move `test_replace_multiple_input_repartition_1`

* Migrate replace_with_order_preserving_variants tests to snapshot-based testing

Converted all tests in replace_with_order_preserving_variants.rs from
macro-based assertions to snapshot-based testing using the insta crate.

Key changes:
- Replaced assert_optimized_in_all_boundedness_situations! and related
  macros with ReplaceTest helper struct
- Used allow_duplicates! and assert_snapshot! for cleaner test assertions
- Match order follows original test parameter ordering:
  (true, _), (false, false), (false, true)
- All snapshots match the original expected plans from the macros
- Removed unused imports and macros

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Co-Authored-By: Claude <noreply@anthropic.com>

* refactor: replace bool test parameters with enums in replace_with_order_preserving_variants tests

Replace boolean test parameters with more descriptive enums:
- Add `Boundedness` enum with `Unbounded` and `Bounded` variants
- Add `SortPreference` enum with `PreserveOrder` and `MaximizeParallelism` variants
- Update `ReplaceTest` struct to use these enums instead of bool fields
- Rename methods from `with_source_unbounded`/`with_prefer_existing_sort` to
  `with_boundedness`/`with_sort_preference`
- Update all test functions to use enum parameters instead of bool
- Update all match patterns to use enum variants

This makes the tests more self-documenting and easier to understand, as the
enum variant names clearly indicate what behavior is being tested.

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Co-Authored-By: Claude <noreply@anthropic.com>

* Clippy

* refactor: replace if expressions with match for boundedness checks

Replace all `if boundedness == Boundedness::Unbounded` checks with cleaner
match expressions. This improves code readability and makes the pattern
matching more explicit and idiomatic.

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Co-Authored-By: Claude <noreply@anthropic.com>

* Missing comments

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Co-authored-by: Claude <noreply@anthropic.com>

Author: blaginin