fix: Use unique created symbol instead of looking for one in a global repository

Author: emyann

src/helpers.ts

@@ -1,6 +1,6 @@
 import { ActionSelector, ActionAggregator, ActionFunction } from './types';
 
-export const SCHEMA_OPTIONS_SYMBOL = Symbol.for('SchemaOptions');
+export const SCHEMA_OPTIONS_SYMBOL = Symbol('SchemaOptions');
 
 export function isActionSelector<S, R>(value: any): value is ActionSelector<S, R> {
   return isObject(value) && value.hasOwnProperty('fn') && value.hasOwnProperty('path');