Tests: Fix indentation in TestTwoPlayerMulti (ArchipelagoMW#4010)

The "filling multiworld" subtest was at the wrong indentation, so was
only running for the last world_type.

"games" has additionally been added to the subtest to help better
identify failures.

Now that the subtest is actually being run for each world type, this
adds about 20 seconds to the duration of the test on my machine.

Author: Mysteryem

test/multiworld/test_multiworlds.py

@@ -71,7 +71,7 @@ def test_two_player_single_game_fills(self) -> None:
             for world in self.multiworld.worlds.values():
                 world.options.accessibility.value = Accessibility.option_full
             self.assertSteps(gen_steps)
-        with self.subTest("filling multiworld", seed=self.multiworld.seed):
-            distribute_items_restrictive(self.multiworld)
-            call_all(self.multiworld, "post_fill")
-            self.assertTrue(self.fulfills_accessibility(), "Collected all locations, but can't beat the game")
+            with self.subTest("filling multiworld", games=world_type.game, seed=self.multiworld.seed):
+                distribute_items_restrictive(self.multiworld)
+                call_all(self.multiworld, "post_fill")
+                self.assertTrue(self.fulfills_accessibility(), "Collected all locations, but can't beat the game")