fix: addressing QA redesign remarks

[isekovanic]

🎯 Goal

This PR fixes a set of SDK-side UI and interaction bugs across attachments, reactions, failed-message actions, and voice messages.

• fixed ephemeral Giphy action layout so narrow Giphys no longer collapse the action buttons
• fixed failed messages showing the full action list on long press - failed/error messages now only show the restricted actions immediately
• fixed expanded reactions view so it opens unfiltered and shows all reactions by default
• fixed reaction selector crash when selecting the last reaction tab
• fixed live reaction updates so removing/updating reactions no longer duplicates entries in the list
• show You for the current user in the reactions list instead of the user name
• updated the SDK bottom sheet top corners to use primitives.radius4xl
• removed leftover pressed opacity behavior from image/video attachments
• removed the file/audio icon from reply previews for voice recordings
• fixed voice message time labels to show remaining time instead of elapsed time

🛠 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	375 KB	375 KB	0 B	🟢