Check number of vault secrets after setup. (#30520)

This is to catch vault secrets from config and
cli. Previously vault_password_file in config was
missed since it was added by setup_vault_secrets,
so check after setup_vault_secrets.

lib/ansible/cli/vault.py

@@ -184,6 +184,10 @@ class VaultCLI(CLI):
                                          vault_password_files=self.options.vault_password_files,
                                          ask_vault_pass=self.options.ask_vault_pass,
                                          create_new_password=True)
+
+            if len(vault_secrets) > 1:
+                raise AnsibleOptionsError("Only one --vault-id can be used for encryption. This includes passwords from configuration and cli.")
+
             if not vault_secrets:
                 raise AnsibleOptionsError("A vault password is required to use Ansible's Vault")