The Chicago City Council is still without a new leader for its powerful Zoning Committee after a mayoral ally on Wednesday delayed a vote to install firebrand progressive Ald. Byron Sigcho-Lopez into the role. Mayor Brandon Johnson had recently been attempting to shore up support for the outspoken Pilsen alderman and staunch Johnson supporter to fill the seat left empty for eight months after the mayor’s original pick resigned amid controversies over how he wielded the post. Johnson’s handpicked Rules Committee chair, Ald. Michelle Harris, 8th, opted not to call the item at Wednesday’s council meeting, however, without explaining why...