Bug 1880988 - Apply spoof English to the default detail summary. r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D202203

dom/html/HTMLDetailsElement.cpp

@@ -105,8 +105,9 @@ void HTMLDetailsElement::SetupShadowTree() {
     }
 
     nsAutoString defaultSummaryText;
-    nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
-                                       "DefaultSummary", defaultSummaryText);
+    nsContentUtils::GetMaybeLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
+                                            "DefaultSummary", OwnerDoc(),
+                                            defaultSummaryText);
     RefPtr<nsTextNode> description = new (nim) nsTextNode(nim);
     description->SetText(defaultSummaryText, kNotify);
     summary->AppendChildTo(description, kNotify, IgnoreErrors());