Wynn Resorts this morning made a $1 million payment owed to the City of Boston as compensation for the company’s Everett casino, but delivered the check to the state gambling commission to hold in escrow after the city refused to accept it, the company said in a statement. Wynn made the payment two days after Mayor Martin Walsh’s administration sued the gambling commission in an effort to block Wynn’s casino project, planned for former industrial land on the Mystic River.