Allow to override icons (#175)

Author: emilkowalski

src/index.tsx

@@ -323,7 +323,9 @@ const Toast = (props: ToastProps) => {
         <>
           {toastType || toast.icon || toast.promise ? (
             <div data-icon="">
-              {toast.promise || toast.type === 'loading' ? <Loader visible={toastType === 'loading'} /> : null}
+              {(toast.promise || toast.type === 'loading') && !toast.icon ? (
+                <Loader visible={toastType === 'loading'} />
+              ) : null}
               {toast.icon || getAsset(toastType)}
             </div>
           ) : null}