Ensure delay node rate limit timer is cleared on reset

packages/node_modules/@node-red/nodes/core/function/89-delay.js

@@ -158,6 +158,7 @@ module.exports = function(RED) {
                         clearInterval(node.intervalID);
                         node.intervalID = -1;
                     }
+                    delete node.lastSent;
                     node.buffer = [];
                     node.status({text:"reset"});
                     return;