Begin tracking why layout is invalidated

Source/core/svg/SVGElement.cpp

Index: Source/core/svg/SVGElement.cpp
diff --git a/Source/core/svg/SVGElement.cpp b/Source/core/svg/SVGElement.cpp
index e81ae352461e0da89729408ad93de27bbb3c3753..1ce3d1f7905f59182ee46720612b8d23249b0038 100644
--- a/Source/core/svg/SVGElement.cpp
+++ b/Source/core/svg/SVGElement.cpp
@@ -423,7 +423,7 @@ void SVGElement::invalidateRelativeLengthClients(SubtreeLayoutScope* layoutScope
         if (renderer->isSVGResourceContainer())
             toLayoutSVGResourceContainer(renderer)->invalidateCacheAndMarkForLayout(layoutScope);
         else
-            renderer->setNeedsLayoutAndFullPaintInvalidation(MarkContainerChain, layoutScope);
+            renderer->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::Unknown, MarkContainerChain, layoutScope);
     }
 
     for (SVGElement* element : m_elementsWithRelativeLengths) {