* popover: refactor panel initialization by extracting the layout call into a separate method, improving code readability and maintainability.

Author: catouse

lib/popover/src/vanilla/popover.ts

@@ -443,7 +443,7 @@ export class Popover<O extends PopoverOptions = PopoverOptions, E extends Compon
                 panel.render(panelOptions);
             } else {
                 panel = new PopoverPanel(targetElement, panelOptions);
-                panel.on('inited', () => this.layout());
+                panel.on('inited', this._handlePanelInited);
             }
             this._panel = panel;
         } else {
@@ -479,6 +479,10 @@ export class Popover<O extends PopoverOptions = PopoverOptions, E extends Compon
         }, delay);
     }
 
+    protected _handlePanelInited = () => {
+        this.layout();
+    };
+
     protected _clearDelayHide() {
         if (this._hideTimer) {
             clearTimeout(this._hideTimer);