docs(app, expo): improve messaging for expo development build users

[raxng]

The previous messaging was a bit confusing since the problem is not with Expo Go, but rather Expo development builds.

Context:
Expo development build = a customized version of "Expo Go" where developers add "react-native" libraries (e.g. react-native-firebase) and recompile the "react-native" layer of the mobile app using XCode and/or Android Studio.

Expo Go contains a pre-compiled "react-native" layer that cannot be changed unless done so by Expo

Description

Related issues

Release Summary

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • ✅ Yes
• My change supports the following platforms;
  • Android
  • iOS
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
  • jest tests added or updated in packages/\*\*/__tests__
• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
  • Yes
  • ✅ No

Test Plan

N/A

• 👉 Star this repo on GitHub ⭐️
• 👉 Follow React Native Firebase and Invertase on Twitter

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Name	Status	Preview	Comments	Updated (UTC)
react-native-firebase	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 9, 2025 9:09pm

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ mikehardy
❌ raxng
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[mikehardy]

Nice! I see the difference, and your version is more helpful, thank you. CI is very opinionated on formatting and spelling but I can push it through from here with little amendments if needed

[mikehardy]

Will need the CLA signed though, even for docs things :-) - if you follow the details link it'll step you through if you haven't already

[mikehardy]

@raxng would love to merge this but need the CLA signed if you have a moment? Thanks!