test: update fetch assertion for no-store cache option

tests/test_pdf_html_preview.py

@@ -197,7 +197,7 @@ class TestLoadHtmlInlineFunction:
         body = ui[idx:idx + 1200]
         assert 'const mediaSessionId=' in body
         assert "'&session_id='+encodeURIComponent(mediaSessionId)" in body
-        assert 'fetch(mediaUrl)' in body
+        assert 'fetch(mediaUrl' in body
         assert "const publicMediaUrl='api/media?path='+encodeURIComponent(path);" in body
         assert "const openUrl=publicMediaUrl+'&inline=1';" in body