Redundant call to items in SelectArrayInput

Nobody has claimed this yet.

**Is your feature request related to a problem? Please describe.**
When I have basic usage of `SelectArrayInput` with `ReferenceArrayInput` and I know referenced data items will be always less than page size because they're static, I would like to avoid Get many call to selected items inside [`useReferenceArrayInputController`](https://github.com/marmelab/react-admin/blob/master/packages/ra-core/src/controller/input/useReferenceArrayInputController.ts#L62) as it doesn't make sense to fetch the data again, I have all data I need and I (as a developer) assure that.

```tsx

```

my point is that there is no `filter` query parameter for these simple static (enum like) endpoints at our API.

**Describe the solution you'd like**
Allow manual suspend of request to getMany items in [`useReferenceArrayInputController`](https://github.com/marmelab/react-admin/blob/master/packages/ra-core/src/controller/input/useReferenceArrayInputController.ts#L68)

something like

```tsx

```

**Describe alternatives you've considered**
Don't have an idea how to solve this better 🤷‍♂️

Start in packages/ra-core/src/controller/input/useReferenceArrayInputController.ts at the linked request path, then trace how ReferenceArrayInput and SelectArrayInput use its data. Define the expected behavior for the proposed opt-out and check existing controller tests or usage patterns before changing the public API. Done means the option is documented and the redundant getMany request is skipped when it is enabled.

Written by the indexing model from the issue text.