fix(lists paste): create custom num definitions for pasted lists

[VladaHarbour]

No description provided.

[linear]

HAR-10144 SuperDoc - Copy/pasted lists from Word lose formatting in SuperDoc paragraph field

[Copilot]

Pull Request Overview

This PR fixes list pasting from DOCX files by creating custom numbering definitions for pasted lists instead of relying on the target document's existing numbering definitions. The key change is moving from a simple mapping approach to dynamically generating proper list definitions with correct formatting parameters.

Key changes:

• Extracts helper functions for list processing into a separate module for better code organization
• Enhances the list definition generation to handle custom formatting parameters (level, start, text, fmt)
• Improves support for both paragraph-based and list-item-based pasted content

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
packages/super-editor/src/core/inputRules/docx-paste/docx-paste.js	Refactored list processing logic to use extracted helpers and support both <p> and <li> elements
packages/super-editor/src/core/helpers/pasteListHelpers.js	New helper module containing extracted list processing utilities and numbering format mappings
packages/super-editor/src/core/helpers/list-numbering-helpers.js	Enhanced generateNewListDefinition to accept custom formatting parameters for pasted lists

[harbournick]

LGTM