Screenshot support capture full screen.

[JFRabbit]

Current behavior

When test case fail, cypress will capture screenshot only visible region.

Desired behavior

Support capture full screen (app preview). In some case, error happened in invisible region, capture full screen maybe will get it.

Set an environment variable in cypress.json, like: screenshotsFullScreen, default is false, capture full screen when it is true.

Versions

Cypress4.10.0

[bahmutov]

I would mark it as a feature but would think this is a low priority since we would expect the error to more likely manifest itself in the command log.

[jennifer-shehane]

Duplicate of #5920