Remove unused NotoSansKR fonts and fix the emboss fallback font (#16665)

Remove `NotoSansKR-Regular.ttf` and `NotoSansKR-Bold.ttf` from `resources/fonts` (12.4 MB). No code loads them. Korean UI text uses NanumGothic. The files came back by accident with the BambuStudio 1.8 merge (#2844), and macOS and the Flatpak still registered them as app fonts.

Emboss text that uses "Noto Sans KR" on macOS or Flatpak now shows the "Can't load exactly same font" warning when edited.

The emboss tool's fallback for a system with no usable TTF font pointed at `NotoSans-Regular.ttf`, which Orca does not ship. It now uses `HarmonyOS_Sans_SC_Regular.ttf`.

src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp

@@ -1089,8 +1089,8 @@ EmbossStyles GLGizmoEmboss::create_default_styles()
         styles.push_back(WxFontUtils::create_emboss_style(wx_font, _u8L("First font")));
     } else {
         // On current OS is not installed any correct TTF font
-        // use font packed with Slic3r
-        std::string font_path = Slic3r::resources_dir() + "/fonts/NotoSans-Regular.ttf";
+        // use font packed with OrcaSlicer
+        std::string font_path = Slic3r::resources_dir() + "/fonts/HarmonyOS_Sans_SC_Regular.ttf";
         styles.push_back(EmbossStyle{_u8L("Default font"), font_path, EmbossStyle::Type::file_path});
     }
     return styles;