Fix form change evolution linking

GetDestinationForm for gen7+ is fine
gen7 and gen8 use the "form" argument as the destination form; -1 means
don't change
espurr-F just gets forced to 1 in gen7 since it's -1

Closes #2564 ty @iiippppk

PKHeX.Core/Legality/Evolutions/EvolutionTree.cs

@@ -136,11 +136,7 @@ private EvolutionTree(IReadOnlyList<byte[]> data, GameVersion game, PersonalTabl
                     {
                         var dSpecies = evo.Species;
                         if (dSpecies == 0)
-                            continue;
-
-                        bool any = evo.Form == EvolutionMethod.AnyForm;
-                        if (!any && evo.Form != sForm)
-                            continue;
+                            break;
 
                         var dForm = evo.GetDestinationForm(sForm);
                         var key = GetLookupKey(dSpecies, dForm);