[Android][iOS] Upgrade react-native-view-shot to 3.4.0

[douglowder]

Why

Closes ENG-6541

How

et uvm -m react-native-view-shot -c 'v3.4.0'
et pods -f
yarn

Test Plan

• test unversioned expo go ios
• test unversioned expo go android
• CI tests pass

Checklist

• Documentation is up to date to reflect these changes (eg: https://docs.expo.dev and README.md).
• Conforms with the Documentation Writing Style Guide
• This diff will work correctly for expo prebuild & EAS Build (eg: updated a module plugin).

[linear]

ENG-6541 react-native-view-shot

[douglowder]

Restoring previous patch to RNViewShot.m that is still not present in 3.4.0

[douglowder]

@lukmccall when you get a chance, please have a look at this upgrade -- et uvm removed Expo-specific changes to the Android module. I've restored them, but would appreciate an additional review to make sure nothing was missed.

[douglowder]

Ok @lukmccall @tsapeta I've restored the use of scoped context, and after going through the rest of the code in expoview, I've removed RNViewShotPackage.java because we don't seem to be using that file.

[expo-bot]

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❌ Error: Changelog entry in wrong CHANGELOG file

Your changelog entries should be noted in package-specific changelogs. Read Updating Changelogs guide and move changelog entries from the global CHANGELOG.md to the following changelogs:

• packages/expo/CHANGELOG.md

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