feat(FormGroup): add eager validation (#992)

docs/content/3.forms/9.form-group.md

@@ -163,6 +163,12 @@ code: >-
   This will only work with form elements that support the `size` prop.
 ::
 
+### Eager Validation
+
+By default, validation is only triggered after the initial `blur` event. This is to prevent the form from being validated as the user is typing. You can override this behavior by setting the `eager-validation` prop to `true`
+
+:component-example{component="form-group-eager-validation-example"}
+
 ## Slots
 
 ### `label`