Always create ID properties when creating links
This avoids headline-references (as opposed to referencing IDs) when implicitly
creating links in new items through `org-capture` when already in `org-capture`.
In that case, the %a template specifier will call `org-store-link`
non-interactively (as it seems) and the old setting of
`org-id-link-to-org-use-id` created links based to the headline of the target
instead of creating a new ID property.
Note that this will also always ignore CUSTOM_ID properties, but I haven't used