Add support for "Edited" label when message text is edited

[nuno-vieira]

🔗 Issue Links

Resolves https://github.com/GetStream/ios-issues-tracking/issues/750

🎯 Goal

Add support for "Edited" label when message text is edited.

📝 Summary

• Exposes ChatMessage.textUpdatedAt
• Adds Components.isMessageEditedLabelEnabled
• Adds "Edited" label when message text is edited

🎨 Showcase

🧪 Manual Testing Notes

1. Send a message
2. Edit the text of the message
3. The "Edited" label should appear

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change follows zero ⚠️ policy (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• New code is covered by unit tests
• Comparison screenshots added for visual changes
• Affected documentation updated (docusaurus, tutorial, CMS)

[martinmitrevski]

LGTM ✅ Added 2 comments, curious about your thoughts.

[Stream-iOS-Bot]

StreamChat XCMetrics

target	metric	release/4.49.0	branch	performance	status
MessageList	Hitches total duration	20 ms	5.0 ms	75.0% 🔼	🟢
	Duration	5 s	2.5 s	50.0% 🔼	🟢
	Hitch time ratio	10 ms per s	2.0 ms per s	80.0% 🔼	🟢
	Frame rate	100 fps	78.2 fps	21.8% 🔼	🟢
	Number of hitches	1	0	100.0% 🔼	🟢
ChannelList	Hitches total duration	20 ms	10.8 ms	46.0% 🔼	🟢
	Duration	5 s	2.6 s	48.0% 🔼	🟢
	Hitch time ratio	10 ms per s	4.2 ms per s	58.0% 🔼	🟢
	Frame rate	100 fps	74.5 fps	25.5% 🔼	🟢
	Number of hitches	1	0	100.0% 🔼	🟢

[sonarcloud]

Quality Gate passed

Issues
47 New issues
0 Accepted issues

Measures
0 Security Hotspots
91.4% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud