claude: Remove pdfstandard conditional from hypersetup.latex

Match pandoc's template by removing the conditional that skipped
pdflang when pdfstandard was set. Having pdflang in both \hypersetup
and \DocumentMetadata is harmless (just redundant).

This simplifies comparison for the passthrough branch.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: gordonwoodhull

src/resources/formats/pdf/pandoc/hypersetup.latex

@@ -6,12 +6,8 @@ $if(author-meta)$
   pdfauthor={$author-meta$},
 $endif$
 $if(lang)$
-$if(pdfstandard)$
-$-- lang is set in DocumentMetadata instead
-$else$
   pdflang={$lang$},
 $endif$
-$endif$
 $if(subject)$
   pdfsubject={$subject$},
 $endif$