Fix emoji search using keyboard language instead of system language

Reverts a change to InputSources.swift that made emoji search depend on the current keyboard layout (e.g., Spanish), rather than the system language (e.g., English).

This restores the previous behavior by using currentAppInputSource().uniqueElements instead of currentKeyboardLanguage(), ensuring emoji search results align with the system language preferences.

Author: anperez

Telegram-Mac/InputSources.swift

@@ -19,7 +19,7 @@ final class InputSources: NSObject {
 
     var value: Signal<[String], NoError> {
         _inputSource.set(Signal { subscriber in
-            subscriber.putNext([currentKeyboardLanguage()])
+            subscriber.putNext(currentAppInputSource().uniqueElements)
             subscriber.putCompletion()
             return EmptyDisposable
         } |> runOn(.mainQueue()))