sane-input-handler: bump volume hold time from 600ms -> 750ms

hopefully this decreases the number of volup inputs which are misread as volup-hold (which happens a lot when the screen is off...?)

hosts/common/programs/sane-input-handler/default.nix

@@ -36,7 +36,7 @@ let
     in assert terminal -> events == []; events;
 
   # trigger ${button}_hold_N every `holdTime` ms until ${button} is released
-  recurseHold = button: { count ? 1, maxHolds ? 5, prefix ? "", holdTime ? 600, ... }@opts: lib.optionalAttrs (count <= maxHolds) {
+  recurseHold = button: { count ? 1, maxHolds ? 5, prefix ? "", holdTime ? 750, ... }@opts: lib.optionalAttrs (count <= maxHolds) {
     "${button}_released".terminal = true;  # end the hold -> back to root state
     timeout = {
       ms = holdTime;