settings: use wallpaper icon for wallpaper & colors

quickshell/Common/SettingsTabs.qml

@@ -14,7 +14,7 @@ Singleton {
         {
             "id": "personalization",
             "text": I18n.tr("Wallpaper & colors"),
-            "icon": "palette",
+            "icon": "wallpaper",
             "tabIndex": 0,
             "hubHeader": "WallpaperColorsTab",
             "aliases": ["wallpaper", "theme_cursor_icons"],

quickshell/Modules/Settings/GreeterTab.qml

@@ -265,7 +265,7 @@ Item {
 
             SettingsNavRow {
                 title: I18n.tr("Wallpaper & colors")
-                iconName: "palette"
+                iconName: "wallpaper"
                 onClicked: root.parentModal?.navigateTo("personalization")
             }
 

quickshell/translations/settings_search_index.json

@@ -2561,7 +2561,7 @@
       "tint",
       "wallpaper"
     ],
-    "icon": "palette"
+    "icon": "wallpaper"
   },
   {
     "section": "clockDateFormat",
@@ -11447,7 +11447,7 @@
       "wallpaper"
     ],
     "parentLabel": "Security",
-    "icon": "palette",
+    "icon": "wallpaper",
     "conditionKey": "greeterAvailable"
   },
   {