Default to Dialpad when entering phone numbers

Default the mobile keypad to number layout when prompted for 2-factor authentication.

We should use the newly available "inputmode" attribute that is gaining acceptance across all modern browsers. It should downgrade nicely to a conventional input

https://css-tricks.com/finger-friendly-numerical-inputs-with-inputmode/

https://caniuse.com/#search=inputmode

• Refactor our phone number inputs into one component
• Phone number input for onboarding, dial pad for small resolutions
• Phone number input for wallet, dial pad for small resolutions
• Phone number input for 2FA, dial pad for small resolutions
• Unit tests
• E2E tests