Fix for 'var-naming warns on variables with dynamically set names' removed

[erichiller]

The same issue as reported in #1680 (var-naming warns on variables with dynamically set names) and fixed in #1988 (See file diff) was then later undone in #3422 , but that commit does not appear to have been about var-naming[no-jinja]. In fact the comment from the original fix is still present,

        # We want to allow use of jinja2 templating for variable names
        if "{{" in ident:

so I can only assume that the removal of the return False was not intentional.

Can the behaviour post #1988 be restored?

[shatakshiiii]

@ssbarnea ^^