Add flag to prevent automatic submission of form when using on-screen keyboard #1
Description
When the authentication form is used in a mobile app, an on-screen keyboard (correctly) appears when the user edits a field.
However, a problem arises when the user edits the password via the on-screen keyboard: by pressing the Enter button on the on-screen keyboard, the form is automatically submitted.
Add a configuration flag in all the relevant constructors so that this default behaviour can be disabled. In some cases, we want the user to be forced to explicitly click on the submit button to proceed with the authentication process.