shader: select indirect texture descriptors for image gathers

src/graphics/shader/recompiler/ir/passes/ResourceMaterialization.cpp

@@ -1406,6 +1406,7 @@ void ApplyResourceSpecialization(Program& program, const ResourceSpecialization&
 			}
 			EXIT_IF(image.indirect_root == memory.resource &&
 			        inst.GetOpcode() != ValueOpcode::ImageSampleRaw &&
+			        inst.GetOpcode() != ValueOpcode::ImageGatherRaw &&
 			        inst.GetOpcode() != ValueOpcode::ImageRead);
 		}
 	}