ODataError::__toString() does not provide useful informations

Describe the bug

When an error occurs, it is correctly parsed into a ODataError, which results in an Exception being thrown.
But when i try to get infos, for example by logging, no useful infos appear.
This is because ODataError infos are contained inside its error property which isn't printed.

Expected behavior

Overwrite __toString method in ODataError so that MainError obtained with getError is part of the serialization.
It contains error code, message and details

How to reproduce

try {
// Make some silly call to api to trigger an error

} catch (ODataError $e) {
var_dump($e->__toString()); // Only includes trace, no error code, message or details
}

SDK Version

No response

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

</details>


### Configuration

_No response_

### Other information

_No response_

Beginne bei der ODataError-Ausnahme und ihrem getError-Einstiegspunkt und bilde dann die in der Issue beschriebene protokollierte __toString()-Ausgabe nach. Fertig ist die Aufgabe, wenn die Serialisierung zusätzlich zu den vorhandenen Ausnahmeinformationen den Code, die Nachricht und die Details von MainError enthält.