Fix: Standalone Publish Directories

[2-REC]

Brief description

Dropped directories in the Standalone Publish tool are not handled.

Description

When dropping a directory in the Standalone Publish tool, the content of the directory is not expanded.

The publish then crashes during the integration (in the "integrate_new" plugin) with an "Access Denied" error.

The fix is however already present, but not used (call to the _get_all_paths function).

Additional info

The error is due to the copyfile function being called with a directory as the src parameter (though a file is expected).

The code already contains the fix to expand the directories:

paths = self._get_all_paths(in_paths)

However, the newly created list paths is not used in the following for loop:

for path in in_paths:
   ...

Testing notes:

1. Open the Standalone Publish tool.
2. Select a project, asset, task and family.
3. Drop a directory in the "drop zone".
4. Publish
5. The error [WinError -2147024891] Access Denied (in Windows using "speedcopy") or [WinError 13] Access Denied is raised.