fix(ui): relationship drawer selection with richText useAsTitle

[RajeshKumar11]

Summary

• Fixes relationship drawer selection when the related collection uses a richText field as useAsTitle
• When clicking an item in the drawer, it now properly selects the item instead of navigating away to the edit page
• Custom cell components (like Lexical richText cells) now go through RenderDefaultCell to ensure drawer context is properly handled

Problem

When a relationship field uses appearance: 'drawer' and the related collection has a richText field as useAsTitle, clicking an item in the drawer would navigate to the edit page instead of selecting it.

This happened because custom cell components were rendered via RenderCustomComponent, bypassing RenderDefaultCell which handles drawer context and click selection.

Solution

• Modified RenderDefaultCell to accept a customCell prop for custom cell components
• When a custom cell exists in drawer context, it's wrapped with a button that captures clicks using onClickCapture and prevents nested Link components from navigating
• Updated renderCell.tsx to always use RenderDefaultCell, passing custom cells as a prop

Test plan

• Navigate to a collection with a relationship field that has appearance: 'drawer'
• The related collection should have a richText field as useAsTitle
• Click on the relationship field to open the drawer
• Click on an item in the list
• Verify the item is selected and the drawer closes (instead of navigating to edit page)

Fixes #14050