Description of problem:
There is inconsistency in the modals/dialogs titles:
In some of them, the entity name is provided, in some of them not.
In addition, sometimes the name is too long, so then the title is cut off if present in the title - and that's problematic. So we need to figure out the consistent way of displaying dialogs' titles.

Version-Release number of selected component (if applicable):
4.12.

How reproducible:
always

Steps to Reproduce:
1. Look at some dialog, for example:
VirtualMachines > Snapshots tab > for some snapshot, click on Delete in the kebab menu and see the dialog for its deletion
=> the dialog does not contain the snapshot name, comparing to, for example, Delete VirtualMachine dialog title, also if the VM name is long, the Delete VM dialog title is cut off (see the attachment)

Actual results:
Inconsistent dialog titles, with or without the name, sometimes cut off, depending on the length of the name.

Expected results:
Dialog titles displayed consistently and not cut off, across the whole UI.

Additional info:
See https://bugzilla.redhat.com/show_bug.cgi?id=2132721#c19