refactor(frontend): rearrange column binding steps in create table handler

[BugenZhao]

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What's changed and what's your intention?

Rearrange some column binding steps in CREATE TABLE handler.

Basically, it makes gen_create_table_plan_without_source lightweight and not take AST types as arguments. This is in preparation for #19866.

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.

Documentation

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Release note

[BugenZhao]

• refactor(frontend): generate replace plan without relying on definition #19866
• refactor(frontend): more work-in-progress refactors in create table handler #19941
• refactor(frontend): rearrange column binding steps in create table handler #19917 👈 (View in Graphite)
• refactor(frontend): merge steps for resolving on-conflict behavior in create table handler #19916
• main

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[BugenZhao]

This inlines the function.

[BugenZhao]

This step used to be in bind_sql_column_constraints, now moved into bind_pk_and_row_id_on_relation as a post check.

[st1page]

To be honest, I am not sure about if we need to support row_id in generated column...

dev=> explain create table t(v int, k bigint as _row_id::bigint);
                                                          QUERY PLAN

------------------------------------------------------------------------------------------------------------------------
------
 StreamMaterialize { columns: [v, k, _row_id(hidden)], stream_key: [_row_id], pk_columns: [_row_id], pk_conflict: Overwr
ite }
 └─StreamRowIdGen { row_id_index: 2 }
   └─StreamUnion { all: true }
     └─StreamExchange { dist: HashShard(_row_id) }
       └─StreamProject { exprs: [v, _row_id::Int64 as $expr1, _row_id] }
         └─StreamDml { columns: [v, _row_id] }
           └─StreamSource
(7 rows)