Blasphemous: Fix starting_location: random affecting all Blasphemous worlds (#4428)

Option resolution for the `StartingLocation` option (the only
`ChoiceIsRandom` subclass) was writing to the `randomized` attribute on
the class instead of on the instance, meaning that
`self.options.starting_location.randomized` would be `True` for all
Blasphemous players in the multiworld if any one of the players set
their `StartingLocation` option to `"random"`.

This patch fixes the issue by writing to the `randomized` attribute on
the new instance instead of on the class.

worlds/blasphemous/Options.py

@@ -4,14 +4,17 @@ import random
 
 
 class ChoiceIsRandom(Choice):
-    randomized: bool = False
+    randomized: bool
+
+    def __init__(self, value: int, randomized: bool = False):
+        super().__init__(value)
+        self.randomized = randomized
 
     @classmethod
     def from_text(cls, text: str) -> Choice:
         text = text.lower()
         if text == "random":
-            cls.randomized = True
-            return cls(random.choice(list(cls.name_lookup)))
+            return cls(random.choice(list(cls.name_lookup)), True)
         for option_name, value in cls.options.items():
             if option_name == text:
                 return cls(value)