Wrong response info in the exception when delaying the rendering

[stof]

The Mink Exception displayes the response info in its __toString message. but they are retrieved when displaying the exception, not when creating it. This means that the info will be related to the last page, not to the page on which the exception occured.

We figured it when using Mink in Behat: when using the pretty formatter, the info are right as the exception is displayed just after being thrown. But when using the progress formatter, the exception is only displayed at the end of the run so the response info will be taken from the last page of the last scenario instead

[stof]

Behat 3.0 does not delay the rendering of exceptions anymore, so this is a bit less important now