Oneliner to make RSC CDN work. (#29217)

* Oneline fix to make assets CDN work

* Make this more bearable too why not

Author: AffectedArc07

code/controllers/subsystem/SStgui.dm

@@ -30,6 +30,13 @@ SUBSYSTEM_DEF(tgui)
 	polyfill = "<script>\n[polyfill]\n</script>"
 	basehtml = replacetextEx(basehtml, "<!-- tgui:inline-polyfill -->", polyfill)
 
+/datum/controller/subsystem/tgui/can_vv_get(var_name)
+	if(var_name == "basehtml")
+		return FALSE // No security implication here, it just spams the fuck out of the UI
+
+	return ..()
+
+
 /datum/controller/subsystem/tgui/Shutdown()
 	close_all_uis()
 

tgui/public/tgui.html

@@ -340,6 +340,7 @@
           var node = document.createElement('link');
           node.type = 'text/css';
           node.rel = 'stylesheet';
+          node.crossOrigin = 'anonymous';
           node.href = url;
           // Temporarily set media to something inapplicable
           // to ensure it'll fetch without blocking render