Renaming GoAway to GoingAwayNotice for public api

Author: daymxn

FirebaseAI/Sources/Types/Internal/Live/LiveSessionService.swift

@@ -222,7 +222,7 @@ actor LiveSessionService {
               setupComplete.resume()
             }
           } else if let liveMessage = LiveServerMessage(from: response) {
-            if case let .goAway(message) = liveMessage.messageType {
+            if case let .goingAwayNotice(message) = liveMessage.messageType {
               // TODO: (b/444045023) When auto session resumption is enabled, call `connect` again
               AILog.debug(
                 code: .liveSessionGoingAwaySoon,

FirebaseAI/Sources/Types/Public/Live/LiveServerGoAway.swift renamed to FirebaseAI/Sources/Types/Public/Live/LiveServerGoingAwayNotice.swift

@@ -19,7 +19,7 @@ import Foundation
 /// To  learn more about session limits,  see the docs on [Maximum session duration](https://cloud.google.com/vertex-ai/generative-ai/docs/model-reference/multimodal-live#maximum-session-duration)\.
 @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, *)
 @available(watchOS, unavailable)
-public struct LiveServerGoAway: Sendable {
+public struct LiveServerGoingAwayNotice: Sendable {
   let goAway: GoAway
   /// The remaining time before the connection will be terminated as ABORTED.
   ///

FirebaseAI/Sources/Types/Public/Live/LiveServerMessage.swift

@@ -31,7 +31,7 @@ public struct LiveServerMessage: Sendable {
     case toolCallCancellation(LiveServerToolCallCancellation)
 
     /// Server will disconnect soon.
-    case goAway(LiveServerGoAway)
+    case goingAwayNotice(LiveServerGoingAwayNotice)
   }
 
   /// The actual message sent from the server.
@@ -71,7 +71,7 @@ extension LiveServerMessage.MessageType {
     case let .toolCallCancellation(msg):
       self = .toolCallCancellation(LiveServerToolCallCancellation(msg))
     case let .goAway(msg):
-      self = .goAway(LiveServerGoAway(msg))
+      self = .goingAwayNotice(LiveServerGoingAwayNotice(msg))
     }
   }
 }