[Android] With CardField when the card is completed and then uncomplete the flag does not change

[scesbron]

Describe the bug
With CardField I enter a valid card and then remove some data or change the card number to something invalid. In the card details returned by the CardField component

To Reproduce

• Use the sample app
• Go to the WebhookPayment screen
• Enter valid data
• remove some data or change the card number to something invalid
• validate the form, the payment is ok

Expected behavior

• When we validate the form with incorrect data the payment should not be ok

Smartphone (please complete the following information):

• Android simulator

[scesbron]

To be more precise

• When I enter an invalid card number the last4 value stay with the value from the correct card number
• When I remove the year the expiryYear value is updated but the complete value stay to true