LibGUI+Everywhere: Rename the 'style' frame property to 'frame_style'

'set_frame_style' is what Frame itself uses to set the value, and a
significant number of GML files use 'frame_style' instead of just
'style', so let's switch to it and use it everywhere consistently.

Userland/Libraries/LibGUI/EmojiInputDialog.gml

@@ -23,7 +23,6 @@
 
     @GUI::ScrollableContainerWidget {
         name: "scrollable_container"
-
         content_widget: @GUI::Widget {
             name: "emojis"
             layout: @GUI::VerticalBoxLayout {}