change(ios): relocates the "enter foreground" kbd-reload trigger

Addresses part of #12216

ios/engine/KMEI/KeymanEngine/Classes/Keyboard/InputViewController.swift

@@ -589,7 +589,7 @@ open class InputViewController: UIInputViewController, KeymanWebDelegate {
   }
 
   // KeymanWebViewController maintenance methods
-  func reload() {
+  public func reload() {
     keymanWeb.reloadKeyboard()
   }
 

ios/engine/KMEI/KeymanEngine/Classes/Keyboard/KeymanWebViewController.swift

@@ -72,14 +72,6 @@ class KeymanWebViewController: UIViewController {
     super.init(nibName: nil, bundle: nil)
 
     _ = view
-
-    NotificationCenter.default.addObserver(
-      forName: UIApplication.willEnterForegroundNotification,
-      object: nil,
-      queue: OperationQueue.main
-    ) { _ in
-      self.reloadKeyboard()
-    }
   }
 
   required init?(coder aDecoder: NSCoder) {

ios/keyman/Keyman/Keyman/Classes/MainViewController/MainViewController.swift

@@ -112,6 +112,14 @@ class MainViewController: UIViewController, TextViewDelegate, UIActionSheetDeleg
       forName: Notifications.keyboardRemoved,
       observer: self,
       function: MainViewController.keyboardRemoved)
+    
+    NotificationCenter.default.addObserver(
+      forName: UIApplication.willEnterForegroundNotification,
+      object: nil,
+      queue: OperationQueue.main
+    ) { _ in
+      Manager.shared.inputViewController.reload()
+    }
 
     // Unfortunately, it's the main app with the file definitions.
     // We have to gerry-rig this so that the framework-based SettingsViewController