chore(next): backport multi-column primary key generator fix

[coderabbitai]

Follow-up issue opened as requested by @fengmk2 to ensure that the fix from PR #326 (#326) is cherry-picked to the next branch.

Context:

• PR: fix: muliti column primary generator code error #326
• Comment: fix: muliti column primary generator code error #326 (comment)<comment_id>
• Fix: resolves incorrect code generation when using multi-column primary keys.

Tasks:

1. Cherry-pick the commit(s) from PR fix: muliti column primary generator code error #326 into the next branch.
2. Run the DAL code generator and ensure composite primary-key DAOs are generated correctly.
3. Close this issue once the backport is merged.

Opened by CodeRabbit on behalf of @fengmk2.