[Scenario Editor] Hero's default experience points number should be displayed with its possible range

[LeHerosInconnu]

Preliminary checks

• [X] I've checked that there aren't other open issues on the same topic.

Describe the problem requiring a solution

In fheroes2, the hero's default experience points number should be displayed with its possible range, e.g. "10-90".

In fheroes2:

Describe the possible solution

The hero's default experience points number should be displayed with its possible range, e.g. "10-90".

Additional info

No response