feat: move swipability to full row

[isekovanic]

🎯 Goal

This PR moves swipe-to-reply from the inner MessageBubble to the full MessageItemView, so the entire rendered message row now participates in the swipe interaction instead of only the bubble. The underlying swipe implementation is intentionally unchanged: it keeps the same gesture activation rules, thresholding, haptics, and swipe content behavior.

As part of that change, the old messageContentWidth / setMessageContentWidth measurement path was removed from MessageItemView, MessageBubble and MessageContent, because that state was no longer used by the UI after the swipe boundary moved. This simplifies the message rendering stack and removes an unnecessary layout driven state update/rerender path.

🛠 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	373 KB	373 KB	0 B	🟢