[EWS] Remove extra space from GitHub PR description links

https://bugs.webkit.org/show_bug.cgi?id=241522
<rdar://problem/94842283>

Reviewed by Ryan Haddad.

* Tools/CISupport/ews-build/steps.py:
(UpdatePullRequest): Port changes from 250718@main to EWS.
(UpdatePullRequest.escape_html):
* Tools/CISupport/ews-build/steps_unittest.py:

Canonical link: https://commits.webkit.org/251472@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@295467 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Tools/CISupport/ews-build/steps.py

@@ -5111,7 +5111,7 @@ class UpdatePullRequest(shell.ShellCommand, GitHubMixin, AddToLogMixin):
     ESCAPE_TABLE = {
         '"': '"',
         "'": ''',
-        '>': ' >',
+        '>': '>',
         '<': '&lt;',
         '&': '&amp;',
     }
@@ -5126,7 +5126,7 @@ class UpdatePullRequest(shell.ShellCommand, GitHubMixin, AddToLogMixin):
     @classmethod
     def escape_html(cls, message):
         message = ''.join(cls.ESCAPE_TABLE.get(c, c) for c in message)
-        return re.sub(r'(https?://[^\s<>,:;]+)', r'<a href="\1">\1</a>', message)
+        return re.sub(r'(https?://[^\s<>,:;]+?)(?=[\s<>,:;]|(&gt))', r'<a href="\1">\1</a>', message)
 
     def __init__(self, **kwargs):
         super(UpdatePullRequest, self).__init__(logEnviron=False, timeout=300, **kwargs)

Tools/CISupport/ews-build/steps_unittest.py

@@ -6317,7 +6317,7 @@ def update_pr(x, pr_number, title, description, base=None, head=None, repository
 <pre>
 [Merge-Queue] Add http credential helper
 <a href="https://bugs.webkit.org/show_bug.cgi?id=238553">https://bugs.webkit.org/show_bug.cgi?id=238553</a>
-&lt;rdar://problem/91044821 &gt;
+&lt;rdar://problem/91044821&gt;
 
 Reviewed by NOBODY (OOPS!).