Add .clear support for HTML 5 input types

[lilaconlee]

• Fixes Support .clear() on date inputs #2738

Think directly setting this value might overstep something that's happening in type, but not entirely sure.

[chrisbreiding]

Sorry, I prematurely approved this. I think it probably is an issue that this is no longer going through cy.type(). We need to ensure all the appropriate events (like change) get fired as a result of clearing the input.