fix(dropdown): unexpectedly hidden(#7246) (#7254)

Author: ryne6

Diff for: components/vc-trigger/Trigger.tsx

@@ -215,7 +215,9 @@ export default defineComponent({
       ) {
         return;
       }
-      this.delaySetPopupVisible(false, this.$props.mouseLeaveDelay);
+      if (this.isMouseLeaveToHide()) {
+        this.delaySetPopupVisible(false, this.$props.mouseLeaveDelay);
+      }
       const { vcTriggerContext = {} } = this;
       if (vcTriggerContext.onPopupMouseleave) {
         vcTriggerContext.onPopupMouseleave(e);