{{'false' ? 'yes' : 'no'}} is interpreted as {{false ? 'yes' : 'no'}}

[s666p]

Hello. I found that if a string has a boolean value, then it is interpreted as the boolean value it contains.
For example
PARAM = "false"
JINJA_EXPR = {{ PARAM ? PARAM : "" }}
After rendering JINJA_EXPR, the output is "" but I expect it to be "false" meaning the param is present and can be used.
Could you please explain how to remove this behavior? Or if the latter is not possible could you please tell me how to resolve the case I described?