Fix #7209: Reset spatial index before removeing peeps on fix save.

If the spatial index is corrupted such as in IndianaJones then deleting multiple peeps from the same spatial index will cause an infinite loop. Therefore this will now reset and remake the spatial index if there are peeps that require removing. Note it doesn't reset the spatial index for all saves as it is not required

src/openrct2/Game.cpp

@@ -1251,6 +1251,12 @@ void game_fix_save_vars()
         }
     }
 
+    if (peepsToRemove.size() > 0)
+    {
+        // Some broken saves have broken spatial indexes
+        reset_sprite_spatial_index();
+    }
+
     for (auto ptr : peepsToRemove)
     {
         peep_remove(ptr);