Avoid a website listing parsing an invalid thumbnail image from an empty meta image of its item which does not even consider it as a preview image

src/project/types/website/listing/website-listing-read.ts

@@ -1123,7 +1123,7 @@ async function listItemFromFile(
       descriptionPlaceholder(inputTarget?.outputHref, maxDescLength);
 
     const imageRaw = documentMeta?.image as string | boolean;
-    const image = imageRaw !== undefined && typeof imageRaw === "string"
+    const image = imageRaw && typeof imageRaw === "string"
       ? pathWithForwardSlashes(
         listingItemHref(imageRaw, dirname(projectRelativePath)),
       )

tests/docs/smoke-all/2025/03/07/issue-12222/_quarto.yml

@@ -0,0 +1,21 @@
+project:
+  type: website
+
+website:
+  title: "myblog"
+  twitter-card: true
+  open-graph: true
+  page-footer:
+    center: |
+      Footer image:
+      [![](/profile.jpg)](https://quarto.org/)
+  navbar:
+    right:
+      - icon: github
+        href: https://github.com/
+      - icon: twitter
+        href: https://twitter.com
+
+format:
+  html:
+    theme: cosmo

tests/docs/smoke-all/2025/03/07/issue-12222/index.qmd

@@ -0,0 +1,15 @@
+---
+title: "Listing Example"
+listing:
+  contents: posts
+  sort: "date desc"
+_quarto:
+  render-project: true
+  tests:
+    html:
+      ensureFileRegexMatches:
+        - 
+          - '\<img src="posts[/|\\]post-with-code[/|\\]image.jpg'
+          - '\<img src="posts[/|\\]welcome[/|\\]thumbnail.jpg'
+        - []
+---

tests/docs/smoke-all/2025/03/07/issue-12222/posts/preview-image-and-empty-meta-image/index.qmd

@@ -0,0 +1,18 @@
+---
+date: '2025-03-06T14:38:55+09:00'
+title: "Yes, meta image but empty"
+_quarto:
+  render-project: true
+  tests:
+    html:
+      ensureFileRegexMatches:
+        - 
+          - '\<meta name="twitter:image" content="../..[/|\\]posts/welcome/thumbnail.jpg'
+          - '\<meta property="og:image" content="../..[/|\\]posts/welcome/thumbnail.jpg'
+        - []
+image: ""
+---
+
+Testing images.
+
+![](/posts/welcome/thumbnail.jpg)

tests/docs/smoke-all/2025/03/07/issue-12222/posts/preview-image-and-no-meta-image/index.qmd

@@ -0,0 +1,17 @@
+---
+date: '2025-03-06T14:38:55+09:00'
+title: "This has no meta image"
+_quarto:
+  render-project: true
+  tests:
+    html:
+      ensureFileRegexMatches:
+        - 
+          - '\<meta name="twitter:image" content="../..[/|\\]posts/post-with-code/image.jpg'
+          - '\<meta property="og:image" content="../..[/|\\]posts/post-with-code/image.jpg'
+        - []
+---
+
+Testing images.
+
+![](/posts/post-with-code/image.jpg)