del: windowMode$ from public callViewModel

replace with edgeToEdge$

src/state/CallViewModel/CallViewModel.ts

@@ -331,10 +331,6 @@ export interface CallViewModel {
     { sender: string; emoji: string; startX: number }[]
   >;
 
-  /**
-   * The general shape of the window.
-   */
-  windowMode$: Behavior<WindowMode>;
   /**
    * The layout of tiles in the call interface.
    */
@@ -1764,7 +1760,6 @@ export function createCallViewModel$(
     reconnecting$: localMembership.reconnecting$,
     livekitRoomItems$,
     connected$: localMembership.connected$,
-    windowMode$,
   };
 }