Drop media and activeWindow from default bar layout

Aligns shell-defaults.json with the practical default — no media widget
in center, no activeWindow on the left.

default/quickshell/omarchy-shell/shell-defaults.json

@@ -7,11 +7,9 @@
     "layout": {
       "left": [
         { "id": "omarchy" },
-        { "id": "workspaces" },
-        { "id": "activeWindow" }
+        { "id": "workspaces" }
       ],
       "center": [
-        { "id": "media" },
         { "id": "calendar", "format": "dddd HH:mm", "formatAlt": "dd MMMM 'W'ww yyyy", "verticalFormat": "HH\n—\nmm" },
         { "id": "weatherFlyout" },
         { "id": "update" },
@@ -22,12 +20,12 @@
       ],
       "right": [
         { "id": "tray" },
-        { "id": "systemStats" },
         { "id": "microphone" },
         { "id": "bluetoothPanel" },
         { "id": "networkPanel" },
         { "id": "audioPanel" },
         { "id": "battery" },
+        { "id": "systemStats" },
         { "id": "controlCenter" }
       ]
     }