Fixed #26192 -- Added control that removing constants from ordering.

[cansarigol]

Ticket: #26192

[cansarigol]

Hi @felixxm, I changed the pr as you want. Could you review it?
in addition, I added a warning. if it's unnecessary, I'll delete that part.

[cansarigol]

test errors about: annotation=Value(1, IntegerField()) and order by annotation
If there will be a warning, this line must be deleted.

# Should not raise
 list(qs1.union(qs2).order_by('annotation'))

[felixxm]

Falling test proved that ordering by constants is reasonable in some cases (e.g. in compound queries). I prepared PR #11396 with alternative approach.