fix visibility of new childMessagesProperty (#462)

Co-authored-by: cameronvoell <cameronvoell@users.noreply.github.com>

Author: cameronvoell

Sources/XMTPiOS/Libxmtp/Message.swift

@@ -20,7 +20,7 @@ public enum SortDirection {
 public struct Message: Identifiable {
 	let ffiMessage: FfiMessage
 	private let decodedContent: Any?
-    let childMessages: [Message]?
+    public let childMessages: [Message]?
 
 	public var id: String {
 		ffiMessage.id.toHex

XMTP.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name         = "XMTP"
-  spec.version      = "3.0.25"
+  spec.version      = "3.0.26"
 
   spec.summary      = "XMTP SDK Cocoapod"