Merge pull request #11495 from storybookjs/8096-mdx-ignore-babel-config

Addon-docs: Fix MDX handling to ignore babel.config.js

addons/docs/src/frameworks/common/preset.ts

@@ -31,6 +31,7 @@ function createBabelOptions({ babelOptions, mdxBabelOptions, configureJSX }: Bab
   return {
     // don't use the root babelrc by default (users can override this in mdxBabelOptions)
     babelrc: false,
+    configFile: false,
     ...babelOptions,
     ...mdxBabelOptions,
     plugins,