Don't reload content all the time (IOS-192)

Mastodon/Scene/Profile/Header/View/ProfileHeaderView+ViewModel.swift

@@ -56,12 +56,6 @@ extension ProfileHeaderView {
             self.account = account
             self.me = me
             self.relationship = relationship
-
-            #warning("TODO: Implement")
-//            $relationshipActionOptionSet
-//                .compactMap { $0.highPriorityAction(except: []) }
-//                .map { $0 == .none }
-//                .assign(to: &$isRelationshipActionButtonHidden)
         }
     }
 }

Mastodon/Scene/Profile/ProfileViewModel.swift

@@ -84,13 +84,11 @@ class ProfileViewModel: NSObject {
         self.profileAboutViewModel = ProfileAboutViewModel(context: context, account: account)
         super.init()
 
-        // bind user
-        $account
-            .map { user -> UserIdentifier? in
-                guard let domain = account.domain else { return nil }
-                return MastodonUserIdentifier(domain: domain, userID: account.id)
-            }
-            .assign(to: &$userIdentifier)
+        if let domain = account.domain {
+            userIdentifier = MastodonUserIdentifier(domain: domain, userID: account.id)
+        } else {
+            userIdentifier = nil
+        }
 
         // bind userIdentifier
         $userIdentifier.assign(to: &postsUserTimelineViewModel.$userIdentifier)