fix(react-form): Make form.options reactive by adding getter

Fixes an issue where form.options.defaultValues was not reactive when
initializing a form with async data. The options object was captured
in the useMemo closure and never updated when formApi.options changed.

Adding a getter for options (similar to the existing state getter)
ensures that the latest options are always returned, fixing reactivity
issues when comparing current values to defaultValues.

Author: swushi

packages/react-form/src/useForm.tsx

@@ -237,6 +237,9 @@ export function useForm<
       get state() {
         return formApi.store.state
       },
+      get options() {
+        return formApi.options
+      },
     } as never
 
     extendedApi.Field = function APIField(props) {