Fix handling of ansible_loop_var and ansible_index_var inside ansible.builtin.include_tasks (#82789)

* added integration test for issue 82655 regarding ansible_loop_var and ansible_index_var inside included yml

* ensure correct handling of ansible_loop_var and ansible_index_var inside ansible builtin include_tasks Co-authored-by: Matt <matt@sivel.net>

* added changelog

* fixed new line issue

changelogs/fragments/82655-fix-ansible-loop-index-var-in-includedtasks.yml

@@ -0,0 +1,2 @@
+bugfixes:
+    - include_tasks - include `ansible_loop_var` and `ansible_index_var` in a loop (https://github.com/ansible/ansible/issues/82655).

lib/ansible/playbook/included_file.py

@@ -95,8 +95,10 @@ class IncludedFile:
                     index_var = include_result.get('ansible_index_var')
                     if loop_var in include_result:
                         task_vars[loop_var] = special_vars[loop_var] = include_result[loop_var]
+                        task_vars['ansible_loop_var'] = special_vars['ansible_loop_var'] = loop_var
                     if index_var and index_var in include_result:
                         task_vars[index_var] = special_vars[index_var] = include_result[index_var]
+                        task_vars['ansible_index_var'] = special_vars['ansible_index_var'] = index_var
                     if '_ansible_item_label' in include_result:
                         task_vars['_ansible_item_label'] = special_vars['_ansible_item_label'] = include_result['_ansible_item_label']
                     if 'ansible_loop' in include_result:

test/integration/targets/include_import/tasks/task_ansible_loop_index_var.yml

@@ -0,0 +1,5 @@
+- name: Assert ansible_loop_var and ansible_index_var are defined with correct values
+  assert:
+    that:
+      - ansible_loop_var is defined and ansible_index_var is defined
+      - ansible_loop_var == "should_show_up_loop" and ansible_index_var == "should_show_up_index"

test/integration/targets/include_import/tasks/test_include_tasks.yml

@@ -42,3 +42,10 @@
 
     - name: include_tasks + action
       action: include_tasks tasks1.yml
+
+    - name: Test ansible_loop_var and ansible_index_var within included_tasks
+      include_tasks: task_ansible_loop_index_var.yml
+      loop: ['does not matter', 'dont care']
+      loop_control:
+        loop_var: should_show_up_loop
+        index_var: should_show_up_index