[New Multicolumn] Avoid freeze if column count is 1 and there's a forced break.

Source/core/rendering/RenderMultiColumnSet.cpp

Index: Source/core/rendering/RenderMultiColumnSet.cpp
diff --git a/Source/core/rendering/RenderMultiColumnSet.cpp b/Source/core/rendering/RenderMultiColumnSet.cpp
index 697fab41b7bd649f87d22d5df26b1f92912edf59..718b852090815b5231389ad9c9ea04590fb45077 100644
--- a/Source/core/rendering/RenderMultiColumnSet.cpp
+++ b/Source/core/rendering/RenderMultiColumnSet.cpp
@@ -137,7 +137,7 @@ LayoutUnit RenderMultiColumnSet::calculateBalancedHeight(bool initial) const
         return m_computedColumnHeight;
     }
 
-    if (forcedBreaksCount() > 1 && forcedBreaksCount() >= computedColumnCount()) {
+    if (forcedBreaksCount() >= computedColumnCount()) {
         // Too many forced breaks to allow any implicit breaks. Initial balancing should already
         // have set a good height. There's nothing more we should do.
         return m_computedColumnHeight;