Fixed batch-sending retry test after #27822 split the guard log

no ref

- #27822 (a1ba8ea, on main after this branch was first pushed) split the
  single "Tried sending email batch that is not pending or failed" error
  into two paths: already-submitted batches now log info ("already submitted
  on a prior run; skipping"), only stuck submitting orphans still error
- the retry test for "One failed batch marks the email as failed" still
  stubbed logging.error and asserted the old message, so the assertion
  failed on the GHA merge commit even though the branch passed locally
- repoint the stub at logging.info with the new message text; same scoped
  pattern (stub for the retry call only, restore before assert)

Author: 9larsons

ghost/core/test/integration/services/email-service/batch-sending.test.js

@@ -490,21 +490,19 @@ describe('Batch sending tests', function () {
         let memberIds = emailRecipients.map(recipient => recipient.get('member_id'));
         assert.equal(memberIds.length, _.uniq(memberIds).length);
 
-        // On retry, the 3 already-submitted batches hit the "not pending or
-        // failed" guard and log an expected error; only the previously-failed
-        // batch is re-sent. Stub the logger to assert that guard instead of
-        // spamming stdout. Scoped to the retry so the genuine failure error
-        // logged by the initial send above stays visible.
-        const errorLog = sinon.stub(logging, 'error');
+        // On retry, the 3 already-submitted batches hit the "already submitted
+        // on a prior run" branch in #sendBatch and log info; only the
+        // previously-failed batch is re-sent. Stub logging.info just for the
+        // retry so the genuine failure error logged by the initial send above
+        // stays visible, then assert at least one of those skip logs fired.
+        const infoLog = sinon.stub(logging, 'info');
 
         await retryEmail(agent, emailModel.id);
         await jobManager.allSettled();
 
-        sinon.assert.called(errorLog);
-        for (const call of errorLog.getCalls()) {
-            assert.match(call.args[0], /Tried sending email batch that is not pending or failed/);
-        }
-        errorLog.restore();
+        const skipLogs = infoLog.getCalls().filter(call => /already submitted on a prior run; skipping/.test(call.args[0]));
+        infoLog.restore();
+        assert.ok(skipLogs.length > 0, 'expected at least one "already submitted on a prior run; skipping" info log');
 
         await emailModel.refresh();
         batches = await models.EmailBatch.findAll({filter: `email_id:'${emailModel.id}'`});