Certain Mark values (ribbon) are only obtainable if the encounter was
obtained in some weather (I really hope there's no crossover cases for
this), and non-symbol encounters can't wander to another zone.
I wonder if you can wander from one zone with one exclusive weather, to
another zone, and get an 'unobtainable' mark (with the new zone's
weather) on the crossover mon's weather. yikes lmao
Closes#2461 by implementing slightly differently
Dictionary instead of new[] every area
Checks original met location first before attempting the dictionary
lookup (missing in pull request)
Easy path forward if LGPE crossover is needed
Potential issues: Since encounter types aren't marked, shaking trees and
fishing encounters are allowed to cross over. Maybe need to have some
marking for encounter slots or something...
