Have the template tag query_string support Mapping[str, Any] as an argument

[Sarah Boyce]

Based off this discussion: ​https://forum.djangoproject.com/t/adding-a-template-tag-to-generate-query-strings/24521/28

Currenty query_string only supports a QueryDict as an argument.

tests/template_tests/syntax_tests/test_query_string.py

@@ -93 +93 @@
         )
         self.assertEqual(output, "?a=2&b=2")
 
+    @setup(
+        {"query_string_dict": "{% query_string my_dict %}"}
+    )
+    def test_query_string_with_explicit_query_dict_and_no_request(self):
+        context = {"my_dict": {"a": 1, "b": 2}}
+        output = self.engine.render_to_string("query_string_dict", context)
+        self.assertEqual(output, "?a=1&b=2")
+
     @setup({"query_string_no_request_no_query_dict": "{% query_string %}"})
     def test_query_string_without_request_or_explicit_query_dict(self):
         msg = "'Context' object has no attribute 'request'"

Note: I believe this is backwards compatible so not a release blocker