feat(storybook): set dynamic base path for deployment

- Added `STORYBOOK_BASE_URL="/ris-ui"` in GitHub Actions.
- Updated `viteFinal` to set `config.base` dynamically.
- Ensured `fonts.css` works in both local and deployed environments.

RISDEV-0000

.github/workflows/pipeline.yml

@@ -120,6 +120,8 @@ jobs:
       group: "pages"
       cancel-in-progress: true
     runs-on: ubuntu-latest
+    env:
+      STORYBOOK_BASE_URL: "/ris-ui"
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.storybook/main.ts

@@ -15,6 +15,10 @@ const config: StorybookConfig = {
 
   async viteFinal(config) {
     if (!config.plugins) config.plugins = [];
+
+    // Dynamically set base path for Storybook
+    config.base = process.env.STORYBOOK_BASE_URL || "/";
+
     config.plugins.push(Icons({ autoInstall: true }));
     return config;
   },