fix(app/theme): 样式调整：更新默认主题以支持线高调整

packages/app/src/core/themes/default.scss

@@ -0,0 +1,6 @@
+:root,
+page {
+}
+.wd-button {
+  line-height: 0;
+}

packages/app/src/main.ts

@@ -4,6 +4,7 @@ import store from './store'
 import { routeInterceptor, requestInterceptor, prototypeInterceptor } from './interceptors'
 import 'virtual:uno.css'
 import '@/style/index.scss'
+import '@/core/themes/default.scss'
 
 export function createApp() {
   const app = createSSRApp(App)