As discovered by this bug report https://discord.com/channels/731205301247803413/1182522267687731220 it's currently possible to accidentally have the starting weapon of a player overwritten by a triforce fragment if TriforceLocations is set to dungeons and StartingPosition is set to dangerous. This fix makes sure to remove the location of a placed starting weapon if said location is in a dungeon from the pool of possible locations that triforce fragments can be placed in this circumstance.