It looks like even your Westminster Confession lists them as 2 separate things. Good works can and should flow out of a sanctified (consecrated) heart, but sanctification does not equal good works.
The subject was faith that is not alone. Justification is a forensic declaration of holiness. We receive a new heart when we are justified (Ezekiel 11:19, 36:26). Sanctification is the process of being made holy in this life. Good works are the evidence of ongoing sanctification in the believer.