Updation in Scheduled Restock

[Nishtha-Jain-1119]

Here are the few changes the client requires for the Scheduled Restock feature.

1. Remove the facility from the required field in mapping and let the user select the facility from the optional field or review page.
2. We need a drop-down to list all the facilities on the review page and the optional fields area.
3. Select the first value of Product Store and Shopify Shop as the default value, so the user doesn't have to select every time.
4. Remove the facility name from the inventory item list.

[ymaheshwari1]

Handled in #286