Cant edit DataGrid cell, bound to "dynamic" item property, implementer by IReflectableType

[BreakByBrick]

Describe the bug

Hello!

I'm trying to use IReflectableType to bind to "dynamic" properties. I read about them here:
#5225
#8119

In particular, I'm trying to implement a binding to the "dynamic" properties of DataGrid items.

I have datagrid with column, bound to "dynamic" property:

and type, inherited from IReflectableType:

When I double click on a cell, editing the cell does not starting.

To Reproduce

https://github.com/BreakByBrick/Avalonia.Issue/tree/main/DataGrid.DynamicPropertyEditing

Expected behavior

Double click on DataGrid cell with bound "dynamic" property, starts cell editing.

Avalonia version

11.0.10

OS

Windows

Additional context

No response