fix: pin preferredAssetRepresentationMode to current

[isekovanic]

🎯 Goal

Zendesk ticket: https://getstream.zendesk.com/agent/tickets/61817

Whenever we set access to the native image picker as Limit Access and try to upload a very large video (above the 100mb threshold), the Alert telling us that we cannot upload the file comes in after a very long time (above 10 seconds).

This is due to the fact that iOS has a compression mechanism in place that unfortunately expo-image-picker waits for. On Android, it's a similar issue (albeit not reproducible on every device), but related to copying the file elsewhere in the system. Unfortunately there is no workaround for Android provided by the library.

This also means that for iOS we will not have implicit compression in place. As an alternative, integrators can implement pickImage on their own if none of these fixes resolve their issues.

🛠 Implementation details

🎨 UI Changes

iOS

Before	After

Android

Before	After

🧪 Testing

☑️ Checklist

• I have signed the Stream CLA (required)
• PR targets the develop branch
• Documentation is updated
• New code is tested in main example apps, including all possible scenarios
  • SampleApp iOS and Android
  • Expo iOS and Android

[Stream-SDK-Bot]

SDK Size

title	develop	branch	diff	status
js_bundle_size	468 KB	468 KB	0 B	🟢

[stream-ci-bot]

🎉 This PR is included in version 6.6.5 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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