Fix #7533: Screenshot is incorrectly named in CJK

For Windows, convert path to UTF-16 before passing to fstream constructor.

distribution/changelog.txt

@@ -3,6 +3,7 @@
 - Feature: [#5993] Ride window prices can now be set via text input.
 - Feature: [#6998] Guests now wait for passing vehicles before crossing railway tracks.
 - Feature: [#7694] Debug option to visualize paths that the game detects as wide.
+- Fix: [#7533] Screenshot is incorrectly named/file is not generated in CJK language.
 - Fix: [#7628] Always-researched items can be modified in the inventory list.
 - Fix: [#7643] No Money scenarios with funding set to zero.
 - Fix: [#7653] Finances money spinner is too narrow for big loans.

src/openrct2/core/Imaging.cpp

@@ -309,7 +309,12 @@ namespace Imaging
                 return ReadFromFile(path, GetImageFormatFromPath(path));
             default:
             {
+#if _WIN32
+                auto pathW = String::ToUtf16(path);
+                std::ifstream fs(pathW, std::ios::binary);
+#else
                 std::ifstream fs(path.data(), std::ios::binary);
+#endif
                 return ReadFromStream(fs, format);
             }
         }
@@ -330,7 +335,12 @@ namespace Imaging
                 break;
             case IMAGE_FORMAT::PNG:
             {
+#ifdef _WIN32
+                auto pathW = String::ToUtf16(path);
+                std::ofstream fs(pathW, std::ios::binary);
+#else
                 std::ofstream fs(path.data(), std::ios::binary);
+#endif
                 WritePng(fs, image);
                 break;
             }