Refactor map properties handling in Overworld Editor for improved clarity and performance

- Rearranged include statements for better organization and reduced redundancy.
- Enhanced the DrawSimplifiedMapSettings method by improving formatting and readability.
- Streamlined the logic for handling world and map changes, ensuring more efficient updates.
- Updated the DrawMapPropertiesPanel and related methods to improve layout and user interaction.
- Refactored overlay handling logic to enhance maintainability and clarity in the Overworld class.

src/app/zelda3/overworld/overworld.h

@@ -190,6 +190,7 @@ class Overworld {
   absl::Status SaveMapProperties();
   absl::Status SaveMusic();
   absl::Status SaveAreaSizes();
+  void AssignMapSizes(std::vector<OverworldMap>& maps);
 
   auto rom() const { return rom_; }
   auto mutable_rom() { return rom_; }