fix(route): 获取 LAYOUT 或 IFRAME 忽略大小写。 并且在通过component找不到页面时打印警告，并返回404页面

src/router/helper/routeHelper.ts

 import type { AppRouteModule, AppRouteRecordRaw } from '/@/router/types';
 import type { Router, RouteRecordNormalized } from 'vue-router';
 
-import { getParentLayout, LAYOUT } from '/@/router/constant';
+import { getParentLayout, LAYOUT, EXCEPTION_COMPONENT } from '/@/router/constant';
 import { cloneDeep, omit } from 'lodash-es';
 import { warn } from '/@/utils/log';
 import { createRouter, createWebHashHistory } from 'vue-router';
@@ -27,7 +27,7 @@ function asyncImportRoute(routes: AppRouteRecordRaw[] | undefined) {
     const { component, name } = item;
     const { children } = item;
     if (component) {
-      const layoutFound = LayoutMap.get(component as string);
+      const layoutFound = LayoutMap.get(component.toUpperCase());
       if (layoutFound) {
         item.component = layoutFound;
       } else {
@@ -54,12 +54,14 @@ function dynamicImport(
   if (matchKeys?.length === 1) {
     const matchKey = matchKeys[0];
     return dynamicViewsModules[matchKey];
-  }
-  if (matchKeys?.length > 1) {
+  } else if (matchKeys?.length > 1) {
     warn(
       'Please do not create `.vue` and `.TSX` files with the same file name in the same hierarchical directory under the views folder. This will cause dynamic introduction failure',
     );
     return;
+  } else {
+    warn('在src/views/下找不到`' + component + '.vue` 或 `' + component + '.TSX`, 请自行创建!');
+    return EXCEPTION_COMPONENT;
   }
 }