Resolve the issue that the breadcrumb of new entry can't reflect accurate location if inside subfolders

[Spr-Aachen]

Issue

When creating a new entry inside a subfolder of a collection e.g., "Posts > subfolder"

The breadcrumb path in the top bar incorrectly displays as "Posts > New entry" instead of "Posts > subfolder > New entry"

Which means the subfolder segment was missing from the breadcrumb when path was null (i.e., during entry creation), even though the entry was correctly saved in the subfolder.

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Solution

When path is null but a parent directory is provided, the fix now:

1. Derives the relative path between the schema's root path and the parent directory
2. Splits it into segments and reconstructs intermediate folder entries
3. Renders the full breadcrumb chain: shows middle segments collapsed via a dropdown (with BreadcrumbEllipsis) if there are multiple levels, and always shows the immediate parent as a clickable link before the "New entry" page title
4. Adds parent to the useMemo dependency array to ensure the breadcrumb re-renders correctly when navigating between folders

This ensures the breadcrumb accurately reflects the actual location where the new entry will be created.

[Spr-Aachen]

Test Result

• Before
  

• After (Local Testing)