Meta: Port recent changes to the GN build

5dce559ed8b67c6a4f1b3a7f555da985ed2933b2
c1b5fe61d17628267c91266a7a590cb11ed492fa

Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/StyleValues/BUILD.gn

@@ -32,6 +32,7 @@ source_set("StyleValues") {
     "ShorthandStyleValue.cpp",
     "StyleValueList.cpp",
     "TransformationStyleValue.cpp",
+    "TransitionStyleValue.cpp",
     "UnresolvedStyleValue.cpp",
   ]
 }

Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn

@@ -36,6 +36,7 @@ source_set("Layout") {
     "RadioButton.cpp",
     "ReplacedBox.cpp",
     "SVGBox.cpp",
+    "SVGClipBox.cpp",
     "SVGFormattingContext.cpp",
     "SVGGeometryBox.cpp",
     "SVGGraphicsBox.cpp",

Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn

@@ -31,6 +31,7 @@ source_set("Painting") {
     "PaintableFragment.cpp",
     "RadioButtonPaintable.cpp",
     "RecordingPainter.cpp",
+    "SVGClipPaintable.cpp",
     "SVGGraphicsPaintable.cpp",
     "SVGMaskPaintable.cpp",
     "SVGPaintable.cpp",