chore: Expo 52 for RN demos, fixes for react-native-web demo

[Chriztiaan]

This covers updating of the RN/RNW demos to use Expo 52 and changing minor config in the React-Native-Web demo to disable the SSR/server side aspects recently introduced. Updated react dev dependency in few packages to make tests work with a newer version resolved by the demos.

For React-Native-Web you need to ensure the web output is single (SPA mode).

 web: {
    bundler: 'metro',
    output: 'single',

I tested all the React Native demos across both Android and iOS.

• We still include the Android build files.
• The Django demo still maintains an iOS directory, I am not sure whether we still need it. Opted to just include the changes for now.

Tested RNW across Android, iOS, and web.

Addresses issues mentioned in #507.

[changeset-bot]

🦋 Changeset detected

Latest commit: ff54de4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@powersync/web	Patch
@powersync/diagnostics-app	Patch

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[stevensJourney]

I haven't tested the demos, but the changes LGTM