Add a test for when cite-method is correctly taken into account

When `cite-method` is set in YAML, its value is only considered when references will be used either by `bibliography` or `references` in YAML header

Author: cderv

tests/docs/smoke-all/2025/03/27/12299-1.lua

@@ -0,0 +1,5 @@
+function Pandoc(doc)
+  assert(quarto.doc.pdf_engine() == "xelatex", "`quarto.doc.pdf_engine()` should be xelatex but is instead: " .. quarto.doc.pdf_engine())
+  assert(quarto.doc.cite_method() == "natbib", "`quarto.doc.cite_method()` should return natbib but return instead: " .. (quarto.doc.cite_method() or 'unset'))
+  return doc
+end

tests/docs/smoke-all/2025/03/27/12299-1.qmd

@@ -0,0 +1,34 @@
+---
+title: testing Lua API value for latex
+format:
+  latex:
+    pdf-engine: xelatex
+    cite-method: natbib
+references:
+- type: article-journal
+  id: WatsonCrick1953
+  author:
+  - family: Watson
+    given: J. D.
+  - family: Crick
+    given: F. H. C.
+  issued:
+    date-parts:
+    - - 1953
+      - 4
+      - 25
+  title: 'Molecular structure of nucleic acids: a structure for
+    deoxyribose nucleic acid'
+  title-short: Molecular structure of nucleic acids
+  container-title: Nature
+  volume: 171
+  issue: 4356
+  page: 737-738
+  DOI: 10.1038/171737a0
+  URL: https://www.nature.com/articles/171737a0
+  language: en-GB
+filters:
+  - 12299-1.lua
+---
+
+