Handle non-string values in JSON renderer (#20233)

Handle the case of async_render_with_possible_json_value's value argument
being something other than a string. This can happen, e.g., when using the
SQL sensor to extract a datetime column such as last_changed and also using
its value_template to convert that datetime to another format. This was
causing a TypeError from json.loads, but async_render_with_possible_json_value
was only catching ValueError's.

homeassistant/helpers/template.py

@@ -167,7 +167,7 @@ class Template:
 
         try:
             variables['value_json'] = json.loads(value)
-        except ValueError:
+        except (ValueError, TypeError):
             pass
 
         try: