Fix crash when using font that does not support bold or italic trait (#976)

* Fix crash when using font that does not support bold trait

* Update CHANGELOG with bug fix for font crash

Added a fix for a crash related to unsupported bold fonts.

* Update CHANGELOG.md

* Clarify font trait support in changelog entry

Updated the changelog entry for issue #976 to clarify the font trait support.

Author: nuno-vieira

CHANGELOG.md

@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### 🐞 Fixed
 - Fix openChannel not working when searching or another chat shown [#975](https://github.com/GetStream/stream-chat-swiftui/pull/975)
+- Fix crash when using a font that does not support bold or italic trait [#976](https://github.com/GetStream/stream-chat-swiftui/pull/976)
 
 # [4.89.1](https://github.com/GetStream/stream-chat-swiftui/releases/tag/4.89.1)
 _September 23, 2025_

Sources/StreamChatSwiftUI/Utils/Common/UIFont+Extensions.swift

@@ -6,8 +6,10 @@ import UIKit
 
 extension UIFont {
     func withTraits(traits: UIFontDescriptor.SymbolicTraits) -> UIFont {
-        let descriptor = fontDescriptor.withSymbolicTraits(traits)
-        return UIFont(descriptor: descriptor!, size: pointSize)
+        guard let descriptor = fontDescriptor.withSymbolicTraits(traits) else {
+            return self
+        }
+        return UIFont(descriptor: descriptor, size: pointSize)
     }
 
     var bold: UIFont {