refactor: streamline styled-components plugin configuration in Electron Vite setup

- Consolidated the styled-components plugin configuration in the Electron Vite config file for improved readability and maintainability.
- Removed conditional application of the plugin based on the VITEST environment variable, ensuring consistent styling behavior across environments.

electron.vite.config.ts

@@ -61,19 +61,17 @@ export default defineConfig({
       (async () => (await import('@tailwindcss/vite')).default())(),
       react({
         tsDecorators: true,
-        plugins: process.env.VITEST
-          ? []
-          : [
-              [
-                '@swc/plugin-styled-components',
-                {
-                  displayName: true, // 开发环境下启用组件名称
-                  fileName: false, // 不在类名中包含文件名
-                  pure: true, // 优化性能
-                  ssr: false // 不需要服务端渲染
-                }
-              ]
-            ]
+        plugins: [
+          [
+            '@swc/plugin-styled-components',
+            {
+              displayName: true, // 开发环境下启用组件名称
+              fileName: false, // 不在类名中包含文件名
+              pure: true, // 优化性能
+              ssr: false // 不需要服务端渲染
+            }
+          ]
+        ]
       }),
       ...(isDev ? [CodeInspectorPlugin({ bundler: 'vite' })] : []), // 只在开发环境下启用 CodeInspectorPlugin
       ...visualizerPlugin('renderer')