Filter floatformat seems to ignore the localize off tag

[Marc Parizeau]

Using the following localization config:

LANGUAGE_CODE = 'fr-ca'
USE_L10N = True

The following in a template:

{% localize off %}{{value}}{% endlocalize %}

produces an unlocalized float, but not:

{% localize off %}{{value|floatformat}}{% endlocalize %}

Is this expected behavior?

[Tim Graham]

Duplicate of #30086 which suggests to document the behavior.