shader: keep fragment layer values under lane masks

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

src/graphics/shader/recompiler/backend/spirv/SpirvBuilder.h

@@ -28,6 +28,7 @@ public:
 	KYTY_CLASS_DEFAULT_COPY(Builder);
 
 	uint32_t AllocateId();
+	void     RequireVersion(uint32_t version);
 	void     RequireCapability(uint32_t capability);
 	void     RequireExtension(const char* name);
 	uint32_t Import(const char* name);