Seven Chinese companies blacklisted by the US for engaging in horrific forced labor practices saw a multi-million dollar boost in investments from New York City’s pension funds during ex-City Comptroller Brad Lander’s tenure, The Post has learned. Lander — who is running in the Democratic primary to unseat Rep. Dan Goldman — oversaw increasing the city’s investments in the companies even after they were sanctioned under the Uyghur Forced Labor Prevention Act, signed by then-President Joe Biden