EW: Starting then cancelling "verify with another device" should not allow user into the app

[mxandreas]

Problem

As we make device verification mandatory, the users should not be allowed anymore into the app before they successfully verify their device. However, the current implementation on EW has not considered that when user chooses the option to verify with another device, they also instantly get into the app. Instead, the verification with another device should be carried out successfully before the user gets into the app.

Designs

• The start of device verification flow when not logged in.

Note that besides showing the device verification outside of the app, the designs of the steps are also modernized. This design upgrade is desired, however it is acceptable if the old designs are used when the copy is aligned to the new designs.