chore(ci): expose staged publication diagnostics (#16776)

* chore(ci): expose staged publication diagnostics

* chore(ci): route staging diagnostics to stderr

.github/scripts/npm-staged-publication.sh

@@ -58,7 +58,7 @@ stage_packages() {
           --access public \
           --provenance \
           --no-git-checks \
-          --reporter=silent \
+          --use-stderr \
           --json)
         if ! stage_id=$(jq -er --arg name "$name" \
           '.[$name].stageId | strings | select(length > 0)' <<< "$stage_output"); then

.github/scripts/npm-staged-publication.test.sh

@@ -78,7 +78,7 @@ NPM_STAGE_TEST_PNPM_LOG="$pnpm_log" \
   "$script_dir/npm-staged-publication.sh" stage 'test layer' next-12 \
     "$test_tmp/staged" "$test_tmp/already"
 
-grep -q 'stage publish.*/staged/ --registry https://registry.npmjs.org/ --npmrc-auth-file /dev/null --tag next-12 --access public --provenance --no-git-checks --reporter=silent --json' "$pnpm_log"
+grep -q 'stage publish.*/staged/ --registry https://registry.npmjs.org/ --npmrc-auth-file /dev/null --tag next-12 --access public --provenance --no-git-checks --use-stderr --json' "$pnpm_log"
 test "$(wc -l < "$pnpm_log")" -eq 1
 grep -q '| `@pnpm/staged@1.0.0` | `11111111-2222-4333-8444-555555555555` |' "$summary"
 grep -q '| `@pnpm/already@1.0.0` | already published |' "$summary"