GUI: wrong packs pool selection dialog in tourney window

Tourney -> Booster Draft Elimination (Rich Man)

It allows to select sets list for draft, but choose dialog is bugged (wrong element sizes). Maybe it can be replaced to `PickCheckBoxDialog`.

TODO that can be done:
* [x] fix choose dialog sizes;
* [ ] replace sets select dialogs with `PickCheckBoxDialog`;

Wrong sizes bug:

`PickCheckBoxDialog` example (Deck Editor):

`PickChoiceDialog` example (images download):

Start in the Tourney → Booster Draft Elimination (Rich Man) flow and inspect the sets-selection dialogs, comparing them with the PickCheckBoxDialog example from the Deck Editor. Done means the dialog sizes are correct and the sets-selection dialogs use PickCheckBoxDialog where appropriate.

Written by the indexing model from the issue text.