Fixed S3 bucket endpoint for enterprise builds.

BraveShared/Analytics/UserReferralProgram.swift

@@ -30,6 +30,7 @@ public class UserReferralProgram {
             return Bundle.main.infoDictionary?[key] as? String
         }
 
+        // This should _probably_ correspond to the baseUrl for NTPDownloader
         let host = AppConstants.buildChannel == .developer ? HostUrl.staging : HostUrl.prod
 
         guard let apiKey = getPlistString(for: UserReferralProgram.apiKeyPlistKey)?.trimmingCharacters(in: .whitespacesAndNewlines) else {

Client/Frontend/Browser/HomePanel/NTPDownloader.swift

@@ -22,8 +22,10 @@ class NTPDownloader {
         case sponsor
 
         var resourceBaseURL: URL? {
-            let baseUrl = AppConstants.buildChannel.isPublic ? "https://mobile-data.s3.brave.com/"
-                : "https://mobile-data-dev.s3.brave.software"
+            // This should _probably_ correspond host for URP
+            let baseUrl = AppConstants.buildChannel == .developer
+                ? "https://mobile-data-dev.s3.brave.software"
+                : "https://mobile-data.s3.brave.com/"
 
             switch self {
             case .superReferral(let code):