Fix nested noop block padding in dynamic includes (#38814)

* Fix nested noop block padding in dynamic includes

* Address issues from the review

* Fix typo

test/integration/targets/strategy_linear/aliases

@@ -0,0 +1 @@
+posix/ci/group3

test/integration/targets/strategy_linear/roles/role1/tasks/main.yml

@@ -0,0 +1,6 @@
+- name: Include tasks
+  include_tasks: "tasks.yml"
+
+- name: Mark role as finished
+  set_fact:
+    role1_complete: True

test/integration/targets/strategy_linear/roles/role1/tasks/tasks.yml

@@ -0,0 +1,7 @@
+- name: Call role2
+  include_role:
+    name: role2
+
+- name: Call role2 again
+  include_role:
+    name: role2

test/integration/targets/strategy_linear/roles/role2/tasks/main.yml

@@ -0,0 +1,7 @@
+- block:
+    - block:
+      - name: Nested task 1
+        debug: msg="Nested task 1"
+
+      - name: Nested task 2
+        debug: msg="Nested task 2"

test/integration/targets/strategy_linear/runme.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+set -eux
+
+ansible-playbook test_include_file_noop.yml -i ../../inventory "$@"

test/integration/targets/strategy_linear/test_include_file_noop.yml

@@ -0,0 +1,16 @@
+- hosts:
+    - testhost
+    - testhost2
+  gather_facts: no
+  vars:
+    secondhost: testhost2
+  tasks:
+    - name: Call the first role only on one host
+      include_role:
+        name: role1
+      when: inventory_hostname is match(secondhost)
+
+    - name: Make sure nothing else runs until role1 finishes
+      assert:
+        that:
+          - "'role1_complete' in hostvars[secondhost]"