fix: iOS app crash due to missing CADisableMinimumFrameDurationOnPhone

Add required Info.plist entry for Compose Multiplatform iOS support.
This key is strictly enforced since Compose Multiplatform 1.6.10 to
ensure proper support for high refresh rate displays (120Hz).

Without this key, the app crashes during initialization with:
PlistSanityCheck.performIfNeeded throwing a Kotlin/Native exception.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: contextablemark

kotlin-sdk/examples/chatapp/iosApp/iosApp/Info.plist

@@ -65,5 +65,7 @@
 		<key>NSAllowsArbitraryLoads</key>
 		<true/>
 	</dict>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 </dict>
 </plist>