Move checkRoleEscalation outside DB transaction in createAccount

The read-only role escalation check iterates all API commands and
does not need a write transaction open. Using a transient AccountVO
for the check avoids holding the DB connection during the permission
scan, reducing connection pool pressure and API latency.

Author: sliceofapplepie

server/src/main/java/com/cloud/user/AccountManagerImpl.java

@@ -1341,20 +1341,19 @@ public UserAccount createUserAccount(final String userName, final String passwor
 
         final String accountNameFinal = accountName;
         final Long domainIdFinal = domainId;
-        final String accountUUIDFinal = accountUUID;
+        final String resolvedAccountUUID = accountUUID != null ? accountUUID : UUID.randomUUID().toString();
+
+        // Check role escalation before the transaction — this is a read-only check
+        // that iterates all API commands and doesn't need a write transaction open.
+        AccountVO requestedAccount = new AccountVO(accountNameFinal, domainIdFinal, networkDomain, accountType, roleId, resolvedAccountUUID);
+        checkRoleEscalation(getCurrentCallingAccount(), requestedAccount);
+
         Pair<Long, Account> pair = Transaction.execute(new TransactionCallback<>() {
             @Override
             public Pair<Long, Account> doInTransaction(TransactionStatus status) {
-                // create account
-                String accountUUID = accountUUIDFinal;
-                if (accountUUID == null) {
-                    accountUUID = UUID.randomUUID().toString();
-                }
-                AccountVO account = createAccount(accountNameFinal, accountType, roleId, domainIdFinal, networkDomain, details, accountUUID);
+                AccountVO account = createAccount(accountNameFinal, accountType, roleId, domainIdFinal, networkDomain, details, resolvedAccountUUID);
                 long accountId = account.getId();
 
-                checkRoleEscalation(getCurrentCallingAccount(), account);
-
                 // create the first user for the account
                 UserVO user = createUser(accountId, userName, password, firstName, lastName, email, timezone, userUUID, source);