Bug 1935081 [wpt PR 49516] - Fix failing WPTs introduced by https://crrev.com/c/5937916, a=testonly

Automatic update from web-platform-tests
Fix failing WPTs introduced by https://crrev.com/c/5937916

There are few failures introduced by WPT import in the editing component
where the editing includes insertHTML command alongwith the white-space
CSS properties. This CL fixes the failing WPTs by setting the
expectation as per the CSS specification linked below.

This change only updates the expectation for the failing WPTs which were
introduced by this[1] CL and seem to have wrong expectations.

[1] https://crrev.com/c/5937916
[2] https://www.w3.org/TR/css-text-3/#white-space-property

Bug: 373924023
Change-Id: I31f2e63275e986c37cc423c5b0c878296d8ee5a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5960541
Reviewed-by: Siye Liu <siliumicrosoft.com>
Reviewed-by: Kent Tamura <tkentchromium.org>
Commit-Queue: Utkarsh Pathak <utpathakmicrosoft.com>
Cr-Commit-Position: refs/heads/main{#1391524}

--

wpt-commits: e427710950c5a8ec3aea974db7d42f6b5631ff3c
wpt-pr: 49516

UltraBlame original commit: 5468b94323f7a0bc4de0aa87cd42a9e8a6f345a6

Author: marco-c

testing/web-platform/tests/editing/data/inserthtml.js

@@ -487,7 +487,7 @@ var browserTests = [
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p>{}<br></p>",
     [["inserthtml","<!--abc-->"]],
-    "<p><!--abc-->{}<br></p>",
+    "<p><!--abc-->{}</p>",
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p><!--foo-->{}<span><br></span><!--bar--></p>",
@@ -521,7 +521,7 @@ var browserTests = [
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p><br>{}</p>",
     [["inserthtml","<!--abc-->"]],
-    "<p><!--abc--><br></p>",
+    "<p><!--abc--></p>",
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<p><!--foo--><span><br></span>{}<!--bar--></p>",
@@ -567,19 +567,21 @@ var browserTests = [
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<pre contenteditable=\"false\"><span contenteditable>[1234]</span></pre>",
     [["inserthtml","<pre>abc</pre>"]],
-    "<pre contenteditable=\"false\"><span contenteditable=\"\">abc</span></pre>",
+    ["<pre contenteditable=\"false\"><span contenteditable=\"\">abc</span></pre>",
+     "<pre contenteditable=\"false\"><span contenteditable=\"\">abc</span></pre>"],
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 
 
 ["<div>a[]b</div>",
     [["inserthtml","<span></span>"]],
-    "<div>a<span></span>b</div>",
+    ["<div>a<span></span>b</div>","<div>a<span></span>b<br></div>"],
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["<div>a[]c</div>",
     [["inserthtml","<span class=\"s1\"></span>b<span class=\"s2\"></span>"]],
-    "<div>a<span class=\"s1\"></span>b<span class=\"s2\"></span>c</div>",
+    ["<div>a<span class=\"s1\"></span>b<span class=\"s2\"></span>c</div>",
+     "<div>a<span class=\"s1\"></span>b<span class=\"s2\"></span>c<br></div>"],
     [true],
     {"inserthtml":[false,false,"",false,false,""]}],
 ["{}",