ReferenceInput make new request only when the optionValue exists on SelectInput?

[Iliyass]

(Note: I know there are a duplicate issue #2585 or Stackoverflow but I found no help)
What you were expecting:
No new request after selecting from SelectInput

What happened instead:
Once you selected an item from SelectInput a new Request issued

Steps to reproduce:
Here I created a codesandbox example, where I changed the tags AutocompleteArrayInput to SelectInput and ReferenceArrayInput to ReferenceInput to reproduce my issue, you will see that no request will be issued because the data provider only get the data from the data.js file, but you can see the helper text under SelectInput https://codesandbox.io/s/jvvq0y0095?fontsize=14

Environment

• React-admin version: ^2.9.0
• Last version that did not exhibit the issue (if applicable):
• React version:16.8.6
• Browser: Chrome

[fzaninotto]

Duplicate of #3108