Allocate an explicit stdin in async_wrapper (#53410)

* add changelog fragment

* Add stdin async test

* Allocate an explicit stdin in async_wrapper. Fixes #50758

test/integration/targets/async/tasks/main.yml

@@ -280,3 +280,9 @@
     file:
       path: '{{ custom_async_tmp }}'
       state: absent
+
+- name: Test that async has stdin
+  command: >
+    {{ ansible_python_interpreter|default('/usr/bin/python') }} -c 'import os; os.fdopen(os.dup(0), "r")'
+  async: 1
+  poll: 1