Properly copy the role path when the IncludeRole object is copied

This exposed some additional errors in logic in IncludeFile, which
had to be fixed to deal with the fact that the role path (unlike paths
from includes) are always absolute paths.

Fixes #27345

lib/ansible/playbook/included_file.py

@@ -103,13 +103,13 @@ class IncludedFile:
                                     parent_include = parent_include._parent
                                     continue
                                 if isinstance(parent_include, IncludeRole):
-                                    parent_include_dir = os.path.dirname(parent_include._role_path)
+                                    parent_include_dir = parent_include._role_path
                                 else:
                                     parent_include_dir = os.path.dirname(templar.template(parent_include.args.get('_raw_params')))
-                                if cumulative_path is None:
-                                    cumulative_path = parent_include_dir
-                                elif not os.path.isabs(cumulative_path):
+                                if cumulative_path is not None and not os.path.isabs(cumulative_path):
                                     cumulative_path = os.path.join(parent_include_dir, cumulative_path)
+                                else:
+                                    cumulative_path = parent_include_dir
                                 include_target = templar.template(include_result['include'])
                                 if original_task._role:
                                     new_basedir = os.path.join(original_task._role._role_path, 'tasks', cumulative_path)

lib/ansible/playbook/role_include.py

@@ -127,6 +127,7 @@ class IncludeRole(TaskInclude):
         new_me._from_files = self._from_files.copy()
         new_me._parent_role = self._parent_role
         new_me._role_name = self._role_name
+        new_me._role_path = self._role_path
 
         return new_me