chore: add Troubleshooting section to React Native docs

[alessbell]

Inspired by #10719.

Adds a Troubleshooting section to the React Native docs with an initial bullet point about the Metro bundler's default configuration with respect to .cjs/.mjs files extensions.

URL to preview page: https://deploy-preview-10723--apollo-client-docs.netlify.app/integrations/react-native

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[alessbell]

Borrowed this Troubleshooting format from the apollo-link-rest page. Checking to see if there are any other points to call out here from past RN-related issues, but if there's only one I'll remove this line.

[jerelmiller]

Thanks for adding this! Feel free to take or leave my suggestions. The troubleshooting section is super helpful though.