iframe updates its parent scrollable area set when its visibility change

Source/core/frame/FrameView.cpp

Index: Source/core/frame/FrameView.cpp
diff --git a/Source/core/frame/FrameView.cpp b/Source/core/frame/FrameView.cpp
index 79c8bc6ed79e305da0bbcb7175273785db4eb902..fce2c7a32d275e9ca8bb26db99041b1e7fdcb85c 100644
--- a/Source/core/frame/FrameView.cpp
+++ b/Source/core/frame/FrameView.cpp
@@ -3958,6 +3958,7 @@ void FrameView::show()
 {
     if (!isSelfVisible()) {
         setSelfVisible(true);
+        updateScrollableAreaSet();
         if (isParentVisible()) {
             for (const auto& child : m_children)
                 child->setParentVisible(true);
@@ -3975,6 +3976,7 @@ void FrameView::hide()
                 child->setParentVisible(false);
         }
         setSelfVisible(false);
+        updateScrollableAreaSet();
     }
 
     Widget::hide();