fix: 修复bi-focus-shadow在下拉框收起时不会blur导致focus-within伪类一直存在的问题

src/base/combination/combo.js

@@ -296,12 +296,14 @@
                 this.popupView && this.popupView.destroy();
                 this.popupView = null;
                 this._rendered = false;
+            } else {
+                this.popupView && this.popupView.invisible();
+            }
 
             if (!e || !this.combo.element.__isMouseInBounds__(e)) {
                 this.element.removeClass(this.options.hoverClass);
-                }
-            } else {
-                this.popupView && this.popupView.invisible();
+                // 应对bi-focus-shadow在收起时不失焦
+                this.element.blur();
             }
 
             this.element.removeClass(this.options.comboClass);