Template fix : the number of instances increases (T1097917)

Scheduler - The number of dataCellRender function calls increases each time the parent component is re-rendered (T1097917)

fix: In some cases (for example: setting more than one prop in one useCallback ) template component is removed before it's got on onRemove listener, therefore it's instance keeps in templatesStore. For fix it we subscribe on dxRemove event on container;