fix: event emitter type (#18664)

* fix: event emitter type

* regenerate golden api

Author: mmalerba

src/material/tabs/tab-body.ts

@@ -130,7 +130,7 @@ export abstract class _MatTabBodyBase implements OnInit, OnDestroy {
   @Output() readonly _beforeCentering: EventEmitter<boolean> = new EventEmitter<boolean>();
 
   /** Event emitted before the centering of the tab begins. */
-  @Output() readonly _afterLeavingCenter: EventEmitter<boolean> = new EventEmitter<boolean>();
+  @Output() readonly _afterLeavingCenter: EventEmitter<void> = new EventEmitter<void>();
 
   /** Event emitted when the tab completes its animation towards the center. */
   @Output() readonly _onCentered: EventEmitter<void> = new EventEmitter<void>(true);

tools/public_api_guard/material/tabs.d.ts

@@ -8,7 +8,7 @@ export interface _MatInkBarPositioner {
 }
 
 export declare abstract class _MatTabBodyBase implements OnInit, OnDestroy {
-    readonly _afterLeavingCenter: EventEmitter<boolean>;
+    readonly _afterLeavingCenter: EventEmitter<void>;
     readonly _beforeCentering: EventEmitter<boolean>;
     _content: TemplatePortal;
     readonly _onCentered: EventEmitter<void>;