sane-input-handler: only inhibit controls if screen is on

hosts/common/programs/sane-input-handler/sane-input-handler

@@ -209,16 +209,16 @@ dispatchInhibited() {
 }
 
 _isAllOn="$(isAllOn && echo 1 || true)"
-_isInhibited="$(isInhibited && echo 1 || true)"
 
-if [ -n "$_isInhibited" ]; then
-  dispatchInhibited
-fi
-
-if [ -n "$_isAllOn" ]; then
-  dispatchOn
-else
+if [ -z "$_isAllOn" ]; then
   dispatchOff
+else
+  _isInhibited="$(isInhibited && echo 1 || true)"
+  if [ -n "$_isInhibited" ]; then
+    dispatchInhibited
+  else
+    dispatchOn
+  fi
 fi
 
 dispatchDefault