Product targets not in a target file delegation paths are not added to the localMeta

[BaptisteFoy]

Delegated targets were not added to the localMeta structure (which is an in-memory cache of the local storage) until #384. While the PR adds any delegated target that is part of a path from the top targets to a target file, it doesn't match all delegated targets.

For instance, if we have the following structure of delegation:

targets
 └── a.json
   └── b.json
      └── c.json
      └── d.json
        └── target_file.txt

Then only a.json, b.json, and d.json will be added to the localMeta, but not c.json. As c.json isn't in any target file path, it shouldn't need to be in the localMeta, as they shouldn't even be required or downloaded.

It's not a big deal, but opening an issue lets us track it.