Refactor code editor layout configuration

Move the `.frame(false)` call to after `.desired_width(f32::INFINITY)`
for better readability.

src/main.rs

@@ -491,8 +491,8 @@ impl eframe::App for CompilerApp {
                                         .hint_text("Ready to compile...")
                                         .code_editor()
                                         .lock_focus(false)
-                                        .frame(false)
+                                        .desired_width(f32::INFINITY)
-                                        .desired_width(f32::INFINITY),
+                                        .frame(false),
                                 );
                             });
                     }