Re #26536

This is no longer necessary now that the instrument is stored in and set
by the main window

Re #26536

Setting initial state is done by the main window after adding a new
batch is complete and all presenters know their parent presenter. Move
the initialisation of the instrument list to the same place.

Re #26536

The instrument has been moved to the main window so that it can be
synchronised between batches

Re #26536

Update invalid include path. Add missing updates to new files (new
include file and new namespace).

Re #26498

Add an interface to the BatchPresenterFactory.

Re #26498