refactor: use spread operator instead of '.apply()' (#6938)

Co-authored-by: Jay <jasonsaayman@gmail.com>

lib/core/Axios.js

@@ -153,8 +153,8 @@ class Axios {
 
     if (!synchronousRequestInterceptors) {
       const chain = [dispatchRequest.bind(this), undefined];
-      chain.unshift.apply(chain, requestInterceptorChain);
-      chain.push.apply(chain, responseInterceptorChain);
+      chain.unshift(...requestInterceptorChain);
+      chain.push(...responseInterceptorChain);
       len = chain.length;
 
       promise = Promise.resolve(config);

lib/helpers/throttle.js

@@ -17,7 +17,7 @@ function throttle(fn, freq) {
       clearTimeout(timer);
       timer = null;
     }
-    fn.apply(null, args);
+    fn(...args);
   }
 
   const throttled = (...args) => {