hyprland: SUPER+Right creates a new workspace past the end of a monitor

m+1/m-1 only cycle existing workspaces on the active monitor and wrap at
the edges, so SUPER+Right never created a workspace. Replace them with a
Lua helper: advancing past the last workspace on the monitor now creates
a fresh (empty) workspace there; going before the first wraps to the
monitor's last workspace.

hyprland/.config/hypr/hyprland.lua

@@ -41,8 +41,8 @@ hl.config({
 
 hl.config({
   binds = {
-    -- Let SUPER+Left/Right (and scroll) wrap around instead of stopping at the
-    -- edge when cycling workspaces on the active monitor.
+    -- Let SUPER+scroll workspace cycling wrap around instead of stopping at
+    -- the edges. (SUPER+Left/Right wrapping is handled directly in binds.lua.)
     allow_workspace_cycles = true,
   },
 })