T2881
Deprecate biometric authentication. The feature does not persist through Cashtab state change (i.e. a hard refresh). The feature would be technically complex to support through local storage, which is also not 100% reliable in a web app as it depends on the browser.
These gaps make the feature more a security threat vector than a security feature. It is only able to lock the app using the same lock a user has set on their phone. This redundant lock (that sometimes disables itself) should be deprecated.