test-bot: make bottle stats visible by default

Closes Homebrew/homebrew#49620.

Library/Homebrew/cmd/test-bot.rb

@@ -805,9 +805,14 @@ module Homebrew
       unless formula_packaged[formula_name]
         package_url = "#{bintray_repo_url}/#{bintray_package}"
         unless system "curl", "--silent", "--fail", "--output", "/dev/null", package_url
+          package_blob = <<-EOS.undent
+            {"name": "#{bintray_package}",
+             "public_download_numbers": true,
+             "public_stats": true}
+          EOS
           curl "--silent", "--fail", "-u#{bintray_user}:#{bintray_key}",
                "-H", "Content-Type: application/json",
-               "-d", "{\"name\":\"#{bintray_package}\"}", bintray_repo_url
+               "-d", package_blob, bintray_repo_url
           puts
         end
         formula_packaged[formula_name] = true