[3.12] pythongh-136155: Docs: only add custom OpenGraph protocol meta tags for HTML builds (pythonGH-136187)

(cherry picked from commit c45da6a)

Co-authored-by: Maciej Olko <maciej.olko@affirm.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>

Author: 2 people

Doc/conf.py

@@ -601,8 +601,9 @@
 ogp_site_url = 'https://docs.python.org/3/'
 ogp_site_name = 'Python documentation'
 ogp_image = '_static/og-image.png'
-ogp_custom_meta_tags = [
-    '<meta property="og:image:width" content="200">',
-    '<meta property="og:image:height" content="200">',
-    '<meta name="theme-color" content="#3776ab">',
-]
+if 'builder_html' in tags:  # noqa: F821
+    ogp_custom_meta_tags = [
+        '<meta property="og:image:width" content="200">',
+        '<meta property="og:image:height" content="200">',
+        '<meta name="theme-color" content="#3776ab">',
+    ]

Misc/NEWS.d/next/Documentation/2025-07-01-21-04-47.gh-issue-136155.ufmH4Q.rst

@@ -0,0 +1 @@
+EPUB builds are fixed by excluding non-XHTML-compatible tags.