Remove redundant toastableViewController property

Tusker/Preferences/StatusSwipeActions.swift

@@ -34,7 +34,6 @@ extension StatusSwipeAction {
 protocol StatusSwipeActionContainer: UIView {
     var mastodonController: MastodonController! { get }
     var navigationDelegate: any TuskerNavigationDelegate { get }
-    var toastableViewController: ToastableViewController? { get }
     
     var canReblog: Bool { get }
     

Tusker/Screens/Preferences/PreferencesView.swift

@@ -108,7 +108,12 @@ struct PreferencesView: View {
                 PreferenceSectionLabel(title: "Composing", systemImageName: "pencil", backgroundColor: .blue)
             }
             NavigationLink(destination: WellnessPrefsView()) {
-                PreferenceSectionLabel(title: "Digital Wellness", systemImageName: "brain.fill", backgroundColor: .purple)
+                let brainImageName = if #available(iOS 17.0, *) {
+                    "brain.fill"
+                } else {
+                    "brain"
+                }
+                PreferenceSectionLabel(title: "Digital Wellness", systemImageName: brainImageName, backgroundColor: .purple)
             }
             NavigationLink(destination: AdvancedPrefsView()) {
                 PreferenceSectionLabel(title: "Advanced", systemImageName: "gearshape.2.fill", backgroundColor: .gray)

Tusker/Screens/Utilities/Previewing.swift

@@ -15,7 +15,6 @@ import SwiftUI
 @MainActor
 protocol MenuActionProvider: AnyObject {
     var navigationDelegate: TuskerNavigationDelegate? { get }
-    var toastableViewController: ToastableViewController? { get }
 }
 
 @MainActor
@@ -34,10 +33,6 @@ extension MenuActionProvider where Self: TuskerNavigationDelegate {
     var navigationDelegate: TuskerNavigationDelegate? { self }
 }
 
-extension MenuActionProvider where Self: ToastableViewController {
-    var toastableViewController: ToastableViewController? { self }
-}
-
 extension MenuActionProvider {
     
     private var mastodonController: MastodonController? { navigationDelegate?.apiController }
@@ -459,7 +454,7 @@ extension MenuActionProvider {
     }
     
     private func handleSuccess(title: String) {
-        if let toastable = self.toastableViewController {
+        if let toastable = self.navigationDelegate {
             var config = ToastConfiguration(title: title)
             config.systemImageName = "checkmark"
             config.dismissAutomaticallyAfter = 2

Tusker/Views/ContentTextView.swift

@@ -267,10 +267,6 @@ extension ContentTextView: UITextViewDelegate {
 }
 
 extension ContentTextView: MenuActionProvider {
-    var toastableViewController: ToastableViewController? {
-        // todo: pass this down through the text view
-        nil
-    }
 }
 
 extension ContentTextView: UIContextMenuInteractionDelegate {

Tusker/Views/Profile Header/ProfileFieldValueView.swift

@@ -170,10 +170,6 @@ class ProfileFieldValueView: UIView {
 }
 
 extension ProfileFieldValueView: UIContextMenuInteractionDelegate, MenuActionProvider {
-    var toastableViewController: ToastableViewController? {
-        navigationDelegate
-    }
-    
     func contextMenuInteraction(_ interaction: UIContextMenuInteraction, configurationForMenuAtLocation location: CGPoint) -> UIContextMenuConfiguration? {
         guard let (hashtag, url) = getHashtagOrURL(),
               let navigationDelegate else {

Tusker/Views/Status/TimelineStatusCollectionViewCell.swift

@@ -945,7 +945,6 @@ extension TimelineStatusCollectionViewCell: UIPointerInteractionDelegate {
 
 extension TimelineStatusCollectionViewCell: StatusSwipeActionContainer {
     var navigationDelegate: TuskerNavigationDelegate { delegate! }
-    var toastableViewController: ToastableViewController? { delegate }
     
     var canReblog: Bool {
         reblogButton.isEnabled