fix string - for most ui things, there is already a string in the android repo at strings.xml :)

deltachat-ios/Controller/GalleryViewController.swift

@@ -37,7 +37,7 @@ class GalleryViewController: UIViewController {
 
     private lazy var emptyStateView: EmptyStateLabel = {
         let label = EmptyStateLabel()
-        label.text = String.localized("chat_gallery_empty_state")
+        label.text = String.localized("tab_gallery_empty_hint")
         label.isHidden = true
         return label
     }()

deltachat-ios/en.lproj/Localizable.strings

@@ -653,4 +653,3 @@
 "a11y_voice_message_hint_ios" = "After recording double-tap to send. To discard the recording scrub left-right with two fingers.";
 "login_error_no_internet_connection" = "No internet connection, can\'t log in to your server.";
 "share_account_not_configured" = "Account is not configured.";
-"chat_gallery_empty_state" = "No media items in this chat.";