feat(storybook): enable dark mode toggle (#1016)

packages/component/.storybook/main.ts

@@ -3,7 +3,7 @@ import type { StorybookConfig } from '@storybook/react-vite';
 export default {
   stories: ['../src/**/*.stories.mdx', '../src/**/*.stories.@(js|jsx|ts|tsx)'],
   staticDirs: ['../../../apps/web/public'],
-  addons: ['@storybook/addon-links'],
+  addons: ['@storybook/addon-links', 'storybook-dark-mode-v7'],
   framework: {
     name: '@storybook/react-vite',
     options: {