Settings -> Entities table: allow selecting entities w/o unique_id

[ildar170975]

original issue: #20561

Currently it is not possible to select entities w/o unique_id:

A possible reason - these functions are only available for entities with unique_id:

But entities are selected not only for a mass-applying these functions.
They are selected just to get a number of these entities:

And this is impossible since some entities cannot be selected.

Contrary, a helpers table allows to select any entities - with or w/o unique_id:

Suggestion:

1. Allow to select ANY entity.
2. If only one entity is selected and this entity has no unique_id - disable functions mentioned above.
3. If many entities are selected and all of them have no unique_id - same as above.
4. If many entities are selected and some of them have no unique_id - execute functions only for entities with unique_id & show a MsgBox with a note like "some entities cannot be ....".