LibGUI: Add 1px of margin to EmojiPickerDialog

The left and top highlight edges were cut off by the dialog frame.
Add a small margin to make sure all buttons can be painted fully.

Libraries/LibGUI/EmojiInputDialog.cpp

@@ -65,6 +65,7 @@ EmojiInputDialog::EmojiInputDialog(Window* parent_window)
     main_widget.set_frame_shadow(Gfx::FrameShadow::Raised);
     main_widget.set_fill_with_background_color(true);
     auto& main_layout = main_widget.set_layout<VerticalBoxLayout>();
+    main_layout.set_margins({ 1, 1, 1, 1 });
     main_layout.set_spacing(0);
 
     auto code_points = supported_emoji_code_points();