Avoid conditional export for `./dist/style.css` (#136)
For some reason that I don't entirely understand, the conditional export here seems to upset postcss-loader (https://github.com/element-hq/element-web/issues/23595#issuecomment-1877670351) -- possibly because this is neither a cjs nor an es6 import. Since both `require` and `import` point to the same file, we might as well make it unconditional.
