Fix #1934 - Hook reaction pickers into the system's recently used keyboard emojis (#3453)

ElementX/Sources/Application/AppSettings.swift

@@ -48,6 +48,7 @@ final class AppSettings {
         case enableOnlySignedDeviceIsolationMode
         case identityPinningViolationNotificationsEnabled
         case knockingEnabled
+        case frequentEmojisEnabled
     }
     
     private static var suiteName: String = InfoPlistReader.main.appGroupIdentifier
@@ -289,6 +290,9 @@ final class AppSettings {
     
     @UserPreference(key: UserDefaultsKeys.knockingEnabled, defaultValue: false, storageType: .userDefaults(store))
     var knockingEnabled
+    
+    @UserPreference(key: UserDefaultsKeys.frequentEmojisEnabled, defaultValue: isDevelopmentBuild, storageType: .userDefaults(store))
+    var frequentEmojisEnabled
 
     #endif