Fixed measuring error message when trying to measure IterBox

data/ui/control_center.blp

@@ -9,6 +9,7 @@ template $SwayNotificationCenterControlCenter: ApplicationWindow {
 
   ScrolledWindow window {
     hscrollbar-policy: never;
+    overflow: hidden;
 
     styles [
       "control-center",

src/configSchema.json

@@ -27,7 +27,7 @@
     },
     "layer-shell-cover-screen": {
       "type": "boolean",
-      "description": "Wether or not the windows should cover the whole screen when layer-shell is used. Fixes animations in compositors like Hyprland.",
+      "description": "Wether or not the windows should cover the whole screen when layer-shell is used. May exceed the height of the monitor if the value is too large. Fixes animations in compositors like Hyprland.",
       "default": true
     },
     "cssPriority": {

src/controlCenter/controlCenter.vala

@@ -47,11 +47,11 @@ namespace SwayNotificationCenter {
             }
 
             int m_height, n_height;
-            child.measure (Gtk.Orientation.VERTICAL, width,
+            child.measure (Gtk.Orientation.VERTICAL, -1,
                            out m_height, out n_height,
                            null, null);
             int m_width, n_width;
-            child.measure (Gtk.Orientation.HORIZONTAL, height,
+            child.measure (Gtk.Orientation.HORIZONTAL, -1,
                            out m_width, out n_width,
                            null, null);