Returns a random v4 UUID of the form xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, where each x is replaced with a random hexadecimal digit from 0 to f, and y is replaced with a random hexadecimal digit from 8 to b. Migrated the mobile version of this component (https://www.outsystems.com/forge/component-overview/5468/small-guid-generator) to reactive.