Merge pull request CleverRaven#75986 from akrieger/stdfsck

Fix macos builds from using ungated std::filesystem calls in cata_imgui

src/cata_imgui.cpp

@@ -9,6 +9,7 @@
 #undef IMGUI_DEFINE_MATH_OPERATORS
 
 #include "color.h"
+#include "filesystem.h"
 #include "input.h"
 #include "output.h"
 #include "ui_manager.h"
@@ -271,8 +272,7 @@ void cataimgui::client::load_fonts( const Font_Ptr &cata_font,
         }
         auto it = std::find_if( io_typefaces.begin(),
         io_typefaces.end(), []( const std::string & io_typeface ) {
-            std::filesystem::path path( io_typeface );
-            return std::filesystem::exists( path );
+            return file_exist( io_typeface );
         } );
         std::string existing_typeface = *it;
         io.FontDefault = io.Fonts->AddFontFromFileTTF( existing_typeface.c_str(), fontheight, nullptr,