Add field icons to collection tables and row details

[priethor]

What

Add type icons next to field names in the editable collection table and row detail properties. Custom fields use the same icons as the add/change type popovers, and the internal fields get simple matching icons too: Created, Created by, Last edited, and Last edited by.

Title stays text-only.

Why

Once a collection has a few fields, names alone are slower to scan. The icons make the table and row detail panel easier to read without changing the field labels or adding anything to the accessible name.

How

• Share the field type icon list across the add field, change type, table header, and row detail surfaces.
• Keep the icons decorative.
• Give icon-bearing columns a little extra width so the label, sort arrow, and menu still fit.

Testing Instructions

1. Open a collection table with custom fields and check that each field header shows the right type icon.
2. Sort a custom field and open its column menu.
3. Add a field and change an existing field type; both popovers should still show the same icons as before.
4. Open a row detail view and check the icons beside custom and internal fields.
5. Confirm Title still has no icon.

Before / After

Before	After