ios: share the create-and-refresh step between both pickers

Both create functions repeated the same create + listUsers + model
update; only the final action differs. Extract it next to
apiCreateActiveUser, as Kotlin already does with
createProfileForInvitation.

apps/ios/Shared/Model/SimpleXAPI.swift

@@ -259,6 +259,14 @@ func apiCreateActiveUser(_ p: Profile?, pastTimestamp: Bool = false, keepActiveU
     throw r.unexpected
 }
 
+func createProfileKeepingActiveUser(_ profile: Profile) async throws -> User {
+    let newUser = try apiCreateActiveUser(profile, keepActiveUser: true)
+    if let users = try? await listUsersAsync() {
+        await MainActor.run { ChatModel.shared.users = users }
+    }
+    return newUser
+}
+
 func listUsers() throws -> [UserInfo] {
     return try listUsersResponse(chatSendCmdSync(.listUsers))
 }

apps/ios/Shared/Views/Chat/ComposeMessage/ContextProfilePickerView.swift

@@ -229,14 +229,10 @@ struct ContextProfilePickerView: View {
     }
 
     private func createProfileForChat(_ profile: Profile) async throws {
-        let newUser = try apiCreateActiveUser(profile, keepActiveUser: true)
-        let updatedUsers = try? await listUsersAsync()
+        let newUser = try await createProfileKeepingActiveUser(profile)
         await MainActor.run {
             showAddProfile = false
-            if let updatedUsers {
-                chatModel.users = updatedUsers
-                users = updatedUsers.map { $0.user }.filter { u in u.activeUser || !u.hidden }
-            }
+            users = chatModel.users.map { $0.user }.filter { u in u.activeUser || !u.hidden }
             changeProfile(newUser)
         }
     }

apps/ios/Shared/Views/NewChat/NewChatView.swift

@@ -576,14 +576,10 @@ private struct ActiveProfilePicker: View {
     }
 
     private func createProfileForConnection(_ profile: Profile) async throws {
-        let newUser = try apiCreateActiveUser(profile, keepActiveUser: true)
-        let updatedUsers = try? await listUsersAsync()
+        let newUser = try await createProfileKeepingActiveUser(profile)
         await MainActor.run {
             showAddProfile = false
-            if let updatedUsers {
-                chatModel.users = updatedUsers
-                profiles = updatedUsers.map { $0.user }
-            }
+            profiles = chatModel.users.map { $0.user }
             selectedProfile = newUser
             profileSwitchStatus = .switchingUser
         }