unicode-bidi: isolate is creating duplicated runs

Source/core/rendering/InlineIterator.h

Index: Source/core/rendering/InlineIterator.h
diff --git a/Source/core/rendering/InlineIterator.h b/Source/core/rendering/InlineIterator.h
index 87c42c4e4a34ff007d0ce306ed1c47d416f8e689..3e7a69e74605034ade5ee763c5ab86086f8bafd4 100644
--- a/Source/core/rendering/InlineIterator.h
+++ b/Source/core/rendering/InlineIterator.h
@@ -649,7 +649,11 @@ inline void InlineBidiResolver::appendRun()
 
         if (isEndOfLine)
             m_reachedEndOfLine = true;
-        m_eor.increment();
+        // If isolateTrack is inIsolate, the next |start of run| can not be the current isolated renderer.
+        if (isolateTracker.inIsolate())
+            m_eor.moveTo(bidiNextSkippingEmptyInlines(m_eor.root(), m_eor.object()), 0);
+        else
+            m_eor.increment();
         m_sor = m_eor;
     }