fix: Add .storybook to .eslintignore to exclude config files

The .storybook configuration files were being linted by the lint:ci
command, which caused ESLint errors (import/no-extraneous-dependencies
and import/order violations). These are configuration files that should
not be subject to the same linting rules as application code.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: claude

.eslintignore

@@ -9,5 +9,6 @@ bin
 static
 cypress-coverage
 vitest-coverage
+.storybook
 .storybook-dist
 common/styles/themeMap.js