Fix style list breakage if style name contains HTML special characters

https://forums.zotero.org/discussion/115761/z7-beta-document-settings-do-not-show-full-list-of-styles

chrome/content/zotero/elements/styleConfigurator.js

@@ -64,7 +64,7 @@
 					.replace(/^American Sociological Association/, "American Sociological Association (ASA)");
 				
 				styleListEl.appendChild(MozXULElement.parseXULToFragment(`
-					<richlistitem value="${value}">${label}</richlistitem>
+					<richlistitem value="${value}">${Zotero.Utilities.htmlSpecialChars(label)}</richlistitem>
 				`));
 			});
 			this.value = this.getAttribute('value');