fix(wysiwyg): Fix text selection detection for formatting menu in Shadow DOM

- Update selection detection to properly handle Shadow DOM boundaries
- Use getComposedRanges API correctly according to MDN documentation
- Add direct selection detection within block components
- Dispatch custom events from blocks when text is selected
- Fix formatting menu positioning using selection rect from events

ts_web/elements/wysiwyg/dees-formatting-menu.ts

@@ -162,9 +162,11 @@ export class DeesFormattingMenu extends DeesElement {
   }
 
   public show(position: { x: number; y: number }, callback: (command: string) => void | Promise<void>): void {
+    console.log('FormattingMenu.show called:', { position, visible: this.visible });
     this.position = position;
     this.callback = callback;
     this.visible = true;
+    console.log('FormattingMenu.show - visible set to:', this.visible);
   }
 
   public hide(): void {