Fix nested unicode-bidi: isolate

LayoutTests/platform/mac/fast/text/international/unicode-bidi-isolate-nested-first-child-text-expected.txt

Index: LayoutTests/platform/mac/fast/text/international/unicode-bidi-isolate-nested-first-child-text-expected.txt
diff --git a/LayoutTests/platform/mac/fast/text/international/unicode-bidi-isolate-nested-first-child-text-expected.txt b/LayoutTests/platform/mac/fast/text/international/unicode-bidi-isolate-nested-first-child-text-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..307390e906195a9375b9e846aeff68d4db79eada
--- /dev/null
+++ b/LayoutTests/platform/mac/fast/text/international/unicode-bidi-isolate-nested-first-child-text-expected.txt
@@ -0,0 +1,23 @@
+layer at (0,0) size 800x600
+  RenderView at (0,0) size 800x600
+layer at (0,0) size 800x35
+  RenderBlock {HTML} at (0,0) size 800x35
+    RenderBody {BODY} at (8,8) size 784x19
+      RenderInline {SPAN} at (0,0) size 210x18
+        RenderText {#text} at (0,1) size 65x18
+          text run at (0,1) width 65: "First Text           "
+        RenderInline {SPAN} at (0,0) size 25x18
+          RenderText {#text} at (65,1) size 25x18
+            text run at (65,1) width 11 RTL: "\x{5D0}"
+            text run at (75,1) width 15: "->"
+        RenderText {#text} at (89,1) size 85x18
+          text run at (89,1) width 85: "Second Text           "
+        RenderInline {SPAN} at (0,0) size 33x18
+          RenderText {#text} at (173,1) size 33x18
+            text run at (173,1) width 5: " "
+            text run at (177,1) width 11 RTL: "\x{5D0}"
+            text run at (187,1) width 19: "-< "
+        RenderText {#text} at (205,1) size 5x18
+          text run at (205,1) width 5: "       "
+      RenderText {#text} at (209,1) size 5x18
+        text run at (209,1) width 5: "     "