Live Data row controls are announced identically in every row

Steps to reproduce:

1. Go to the notification settings of your profile, in the Custom Filters section.
2. Add a few watched pages so that the Live Data has several rows.
3. Navigate the "Is enabled?" column with a screen reader, or inspect the switches.

Expected result:

Each switch is announced with the row it belongs to, for instance "Toggle Sandbox.WebHome, Is enabled?".

Actual result:

Every switch of the column is announced "Is enabled?", with nothing telling the rows apart.

This is not specific to the toggle displayer. The table layout renders every cell as a plain <td>, without a <th scope="row"> nor any other per-entry label, so no row control can get its context from the table itself. The actions displayer has the same problem, where every row offers a button announced only "Delete", and so does the entry selector checkbox.

A fix likely means Live Data exposing a label for an entry, built from the entry descriptor or from a designated main property, that the row level controls can append to their own accessible name.

The toggle displayer got the column name as an accessible name in XWIKI-22197, which is an improvement over having none at all but does not solve this.