[Workspaces] Fix conanws.yml requiring 'ref' specification (#19115)

Fix conanws.yml requiring 'ref' specification

Author: dev0x13

conan/api/subapi/workspace.py

@@ -263,10 +263,11 @@ def _init_options(conanfile, options):
 
     def super_build_graph(self, deps_graph, profile_host, profile_build):
         order = []
-        packages = self._ws.packages()
+        packages = self.packages()
 
         def find_folder(ref):
-            return next(p["path"] for p in packages if RecipeReference.loads(p["ref"]) == ref)
+            return next(os.path.dirname(os.path.relpath(p["path"], self._folder)) for p_ref, p in
+                        packages.items() if p_ref == ref)
 
         for level in deps_graph.by_levels():
             items = [item for item in level if item.recipe == "Editable"]

test/integration/workspace/test_workspace.py

@@ -1117,6 +1117,11 @@ def test_workspace_defining_only_paths():
     assert "liba/0.1@myuser/mychannel - Editable" in c.out
     assert "libb/0.1 - Editable" in c.out
 
+    c.run("workspace super-install")
+    assert "app1/0.1 - Editable" in c.out
+    assert "liba/0.1@myuser/mychannel - Editable" in c.out
+    assert "libb/0.1 - Editable" in c.out
+
 
 def test_workspace_defining_duplicate_references():
     """