[BUG] Data Store - `Key` Prop show error when `Data Store` prop is not filled

[vunguyenhung]

Describe the bug On Data Store actions having Key prop, the Key prop will show error when Data Store prop is not filled: Cannot read property 'keys' of null

To Reproduce Steps to reproduce the behavior:

1. Create a new Workflow, skip the trigger
2. Add a Data Store action having Key prop, .i.e Add or update a single record
3. On the action, skip the Data Store prop (do not set value), tap into the Key prop
4. See error

Expected behavior

• The Key prop should be disabled at first, then enabled only when the Data Store prop is filled