Use clearer wording for network connection lost errors.

Co-authored-by: Cursor <cursoragent@cursor.com>

App AI for Reddit/Utilities/UserFacingError.swift

@@ -19,7 +19,7 @@ enum UserFacingError {
         case .timedOut:
             "The request timed out. Please try again."
         case .networkConnectionLost:
-            "The connection was interrupted. Please try again."
+            "Couldn't connect. Please try again."
         default:
             generic
         }