shader: keep fragment layer values under lane masks

Co-authored-by: shadowbeat070 <70843316+shadowbeat070@users.noreply.github.com>

src/graphics/shader/recompiler/ir/ShaderIR.h

@@ -160,6 +160,8 @@ enum class StageInputKind {
 	InstanceIndex,
 	FragCoord,
 	FrontFacing,
+	PackedAncillary,
+	Layer,
 	BaryCoordSmooth,
 	BaryCoordNoPerspective,
 	WorkgroupId,