fix: lang: PHP: Fixed syntax highlighting of short PHP tags in HTML s…

…trings - fixes #1773

rn=

(integrated from master branch change 9.2.1-1772-gc93e3b8 by Mitchell <mitchellb@activestate.com>)

src/udl/udl/html2php.udl

@@ -45,7 +45,7 @@ family markup
 # Let the standard markup routine handle '<?' 
 # Here we check to see if there's a 'php' immediately following '<?'
 
-pattern ENTERPHP = '<(?:\?(?:php\b|=|(?=\W))|%)'
+pattern ENTERPHP = '<(?:\?(?:php\b|=)?|%)'
 
 state IN_M_DEFAULT:
 '<%' : paint(upto, M_STRING), paint(include, SSL_OPERATOR) => IN_SSL_DEFAULT