Before this commit:
If we remove a payment line using an Adyen payment method,
`pending_adyen_line()` return `undefined`.
With the `_poll_for_response` still being executed,
it will pop some JS traceback each call with:
```js
TypeError: Cannot read properties of undefined (reading 'terminalServiceId')
```
After this commit:
No JS traceback loop
OPW-3032391
closesodoo/odoo#106470
X-original-commit: 52a517ca74e563a0ad5538e8a7fc1fe19528856c
Signed-off-by: Quentin Lejeune (qle) <qle@odoo.com>