FileSystemItem.from_path() ignores link_target=False parameter

[mih]

It will call readlink unconditionally for any symlink.

The following patch should fix it. A corresponding test is TODO.

diff --git a/datalad_next/iter_collections/utils.py b/datalad_next/iter_collections/utils.py
index 0f00a2e..91fcdc4 100644
--- a/datalad_next/iter_collections/utils.py
+++ b/datalad_next/iter_collections/utils.py
@@ -96,7 +96,7 @@ class FileSystemItem(PathBasedItem, TypedItem):
             uid=cstat.st_uid,
             gid=cstat.st_gid,
         )
-        if ctype == FileSystemItemType.symlink:
+        if link_target and ctype == FileSystemItemType.symlink:
             # could be p.readlink() from PY3.9+
             item.link_target = PurePath(os.readlink(path))
         return item