Install every TeX package the PDF generator's template loads in CI

The template pulls in lmodern, ulem, biblatex and bidi; without them
xelatex stops on the runner and every draft fixture's report gains a
compile finding the expected reports do not carry.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

Author: peterbjohnson

.github/workflows/test.yml

@@ -34,7 +34,8 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y --no-install-recommends \
             texlive-xetex texlive-latex-recommended texlive-latex-extra \
-            texlive-science texlive-lang-chinese fonts-noto-core fonts-noto-cjk
+            texlive-science texlive-lang-chinese fonts-noto-core fonts-noto-cjk \
+            lmodern texlive-plain-generic texlive-bibtex-extra texlive-lang-arabic
       - name: Linting Checks
         run: |
           poetry run black --check .