Ensure special characters are escaped in tscn connections and editable hint

(cherry picked from commit 0a32c160ac89edbb7f48c34e21768c5cc85704af)

scene/resources/resource_format_text.cpp

@@ -2290,10 +2290,10 @@ Error ResourceFormatSaverTextInstance::save(const String &p_path, const Ref<Reso
 			}
 
 			String connstr = "[connection";
-			connstr += " signal=\"" + String(state->get_connection_signal(i)) + "\"";
-			connstr += " from=\"" + String(state->get_connection_source(i).simplified()) + "\"";
-			connstr += " to=\"" + String(state->get_connection_target(i).simplified()) + "\"";
-			connstr += " method=\"" + String(state->get_connection_method(i)) + "\"";
+			connstr += " signal=\"" + String(state->get_connection_signal(i)).c_escape() + "\"";
+			connstr += " from=\"" + String(state->get_connection_source(i).simplified()).c_escape() + "\"";
+			connstr += " to=\"" + String(state->get_connection_target(i).simplified()).c_escape() + "\"";
+			connstr += " method=\"" + String(state->get_connection_method(i)).c_escape() + "\"";
 			int flags = state->get_connection_flags(i);
 			if (flags != Object::CONNECT_PERSIST) {
 				connstr += " flags=" + itos(flags);
@@ -2320,7 +2320,7 @@ Error ResourceFormatSaverTextInstance::save(const String &p_path, const Ref<Reso
 			if (i == 0) {
 				f->store_line("");
 			}
-			f->store_line("[editable path=\"" + editable_instances[i].operator String() + "\"]");
+			f->store_line("[editable path=\"" + editable_instances[i].operator String().c_escape() + "\"]");
 		}
 	}