fix(chips): Update chips in chip list, and add margin to chip input (#8579)

Author: tinayuangao

src/lib/chips/chip-list.ts

@@ -366,6 +366,8 @@ export class MatChipList extends _MatChipListMixinBase implements MatFormFieldCo
 
       // Check to see if we have a destroyed chip and need to refocus
       this._updateFocusForDestroyedChips();
+
+      this.stateChanges.next();
     });
   }