Use backup hidraw brightness write if read-back value fails

rog-control-center/Cargo.toml

@@ -11,6 +11,7 @@ edition.workspace = true
 [features]
 #default = ["mocking"]
 #mocking = []
+x11 = ["slint/backend-winit-x11"]
 
 [dependencies]
 nix = { version = "^0.28.0", features = ["fs"] }