feat: recursively use col-aware encoding for structs

[BugenZhao]

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Checklist

• I have written necessary rustdoc comments.
• I have added necessary unit tests and integration tests.
• I have added test labels as necessary.
• I have added fuzzing tests or opened an issue to track them.
• My PR contains breaking changes.
• My PR changes performance-critical code, so I will run (micro) benchmarks and present the results.
• My PR contains critical fixes that are necessary to be merged into the latest release.

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Release note

[BugenZhao]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• feat: recursively use col-aware encoding for structs #20604 👈 (View in Graphite)
• refactor(frontend): field-aware column id generator #20563
• refactor(frontend): move column id generator to a separate submodule #20664
• refactor: streamline column-aware row encoding impl #20583
• feat(types): add id to struct fields #20620
• main

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