Add custom globals to the environment, and not per template (#69278)

* Add custom globals to the environment, and not per template

* Add changelog fragment

changelogs/fragments/69278-early-customize-jinja2.yml

@@ -0,0 +1,5 @@
+minor_changes:
+- Templating - Add globals to the jinja2 environment at ``Templar``
+  instantiation, instead of customizing the template object.
+  Only customize the template object, to disable lookups.
+  (https://github.com/ansible/ansible/pull/69278)

lib/ansible/template/__init__.py

@@ -572,6 +572,15 @@ class Templar:
             loader=FileSystemLoader(self._basedir),
         )
 
+        # jinja2 global is inconsistent across versions, this normalizes them
+        self.environment.globals['dict'] = dict
+
+        # Custom globals
+        self.environment.globals['lookup'] = self._lookup
+        self.environment.globals['query'] = self.environment.globals['q'] = self._query_lookup
+        self.environment.globals['now'] = self._now_datetime
+        self.environment.globals['finalize'] = self._finalize
+
         # the current rendering context under which the templar class is working
         self.cur_context = None
 
@@ -997,18 +1006,8 @@ class Templar:
                 else:
                     return data
 
-            # jinja2 global is inconsistent across versions, this normalizes them
-            t.globals['dict'] = dict
-
             if disable_lookups:
                 t.globals['query'] = t.globals['q'] = t.globals['lookup'] = self._fail_lookup
-            else:
-                t.globals['lookup'] = self._lookup
-                t.globals['query'] = t.globals['q'] = self._query_lookup
-
-            t.globals['now'] = self._now_datetime
-
-            t.globals['finalize'] = self._finalize
 
             jvars = AnsibleJ2Vars(self, t.globals)