[Bug Fix] Fix Character EXP Modifiers default (#4161)

# Notes
- The `-1.0f` was causing these modifiers to be set to `0.0` and when people would enable them they would get no experience.
- We now use the zone based grabbed methods when setting which will default to a value of `1.0f` if there is not a value found.

common/repositories/character_exp_modifiers_repository.h

@@ -74,9 +74,11 @@ public:
 			};
 		}
 
+		const auto& m = l.front();
+
 		return EXPModifier{
-			.aa_modifier = l[0].aa_modifier,
-			.exp_modifier = l[0].exp_modifier
+			.aa_modifier = m.aa_modifier,
+			.exp_modifier = m.exp_modifier
 		};
 	}