fix: homeTimeline refresh after follow people

Mastodon/Scene/HomeTimeline/HomeTimelineViewController.swift

@@ -200,6 +200,10 @@ extension HomeTimelineViewController {
         
         // needs trigger manually after onboarding dismiss
         setNeedsStatusBarAppearanceUpdate()
+        
+        if (viewModel.fetchedResultsController.fetchedObjects ?? []).isEmpty {
+            viewModel.loadLatestStateMachine.enter(HomeTimelineViewModel.LoadLatestState.Loading.self)
+        }
     }
 
     override func viewDidAppear(_ animated: Bool) {
@@ -280,6 +284,7 @@ extension HomeTimelineViewController {
     
     @objc private func findPeopleButtonPressed(_ sender: PrimaryActionButton) {
         let viewModel = SuggestionAccountViewModel(context: context)
+        viewModel.delegate = self.viewModel
         coordinator.present(scene: .suggestionAccount(viewModel: viewModel), from: self, transition: .modal(animated: true, completion: nil))
     }
     

Mastodon/Scene/HomeTimeline/HomeTimelineViewModel.swift

@@ -129,3 +129,9 @@ final class HomeTimelineViewModel: NSObject {
     }
     
 }
+
+extension HomeTimelineViewModel: SuggestionAccountViewModelDelegate {
+    func homeTimelineNeedRefresh() {
+        loadLatestStateMachine.enter(LoadLatestState.Loading.self)
+    }
+}

Mastodon/Scene/SuggestionAccount/SuggestionAccountViewModel.swift

@@ -13,12 +13,16 @@ import MastodonSDK
 import os.log
 import UIKit
     
+protocol SuggestionAccountViewModelDelegate: AnyObject {
+    func homeTimelineNeedRefresh()
+}
 final class SuggestionAccountViewModel: NSObject {
     var disposeBag = Set<AnyCancellable>()
     
     // input
     let context: AppContext
     
+    weak var delegate: SuggestionAccountViewModelDelegate?
     // output
     let accounts = CurrentValueSubject<[NSManagedObjectID], Never>([])
     var selectedAccounts = [NSManagedObjectID]()
@@ -137,7 +141,7 @@ final class SuggestionAccountViewModel: NSObject {
                 case .failure(let error):
                     os_log("%{public}s[%{public}ld], %{public}s: follow failed. %s", (#file as NSString).lastPathComponent, #line, #function, error.localizedDescription)
                 case .finished:
-                    // handle isFetchingLatestTimeline in fetch controller delegate
+                    self.delegate?.homeTimelineNeedRefresh()
                     break
                 }
             } receiveValue: { _ in