Publicly export withinSubject option on get command

[paul-sachs]

The get command has a hidden option called withinSubject which is mapped to the internal state of cypress. It can also be used to override the scope, primarily to disable it entirely so you can reach out of the within scope:

cy.get('form').within(form => {
  ...do form stuff
  // Access an element outside of the form
  cy.get('popoverElement', { withinSubject: null }).click();
  ...continue form stuff
});

[CLAassistant]

All committers have signed the CLA.

[flotwig]

This would also need a PR in cypress-io/cypress-documentation to add this option to https://docs.cypress.io/api/commands/get.html#Arguments

[paul-sachs]

Also created PR for documentation: cypress-io/cypress-documentation#1722

[cypress-bot]

Released in 3.4.0.