build: fix CI failures (#17867)

Fixes a couple of API goldens failing and the autocomplete demo throwing a strict null compilation error.

Author: crisbeto

src/dev-app/autocomplete/autocomplete-demo.html

@@ -2,7 +2,7 @@
 <div [style.height.px]="topHeightCtrl.value"></div>
 <div class="demo-autocomplete">
   <mat-card *ngIf="(reactiveStates | async) as tempStates">
-    Reactive length: {{ tempStates.length }}
+    Reactive length: {{ tempStates?.length }}
     <div>Reactive value: {{ stateCtrl.value | json }}</div>
     <div>Reactive dirty: {{ stateCtrl.dirty }}</div>
 

tools/public_api_guard/cdk/overlay.d.ts

@@ -40,7 +40,7 @@ export declare class CdkConnectedOverlay implements OnDestroy, OnChanges {
     static ngAcceptInputType_hasBackdrop: boolean | string | null | undefined;
     static ngAcceptInputType_lockPosition: boolean | string | null | undefined;
     static ngAcceptInputType_push: boolean | string | null | undefined;
-    static ɵdir: i0.ɵɵDirectiveDefWithMeta<CdkConnectedOverlay, "[cdk-connected-overlay], [connected-overlay], [cdkConnectedOverlay]", ["cdkConnectedOverlay"], { 'origin': "cdkConnectedOverlayOrigin", 'positions': "cdkConnectedOverlayPositions", 'offsetX': "cdkConnectedOverlayOffsetX", 'offsetY': "cdkConnectedOverlayOffsetY", 'width': "cdkConnectedOverlayWidth", 'height': "cdkConnectedOverlayHeight", 'minWidth': "cdkConnectedOverlayMinWidth", 'minHeight': "cdkConnectedOverlayMinHeight", 'backdropClass': "cdkConnectedOverlayBackdropClass", 'panelClass': "cdkConnectedOverlayPanelClass", 'viewportMargin': "cdkConnectedOverlayViewportMargin", 'scrollStrategy': "cdkConnectedOverlayScrollStrategy", 'open': "cdkConnectedOverlayOpen", 'hasBackdrop': "cdkConnectedOverlayHasBackdrop", 'lockPosition': "cdkConnectedOverlayLockPosition", 'flexibleDimensions': "cdkConnectedOverlayFlexibleDimensions", 'growAfterOpen': "cdkConnectedOverlayGrowAfterOpen", 'push': "cdkConnectedOverlayPush" }, { 'backdropClick': "backdropClick", 'positionChange': "positionChange", 'attach': "attach", 'detach': "detach", 'overlayKeydown': "overlayKeydown" }, never>;
+    static ɵdir: i0.ɵɵDirectiveDefWithMeta<CdkConnectedOverlay, "[cdk-connected-overlay], [connected-overlay], [cdkConnectedOverlay]", ["cdkConnectedOverlay"], { 'origin': "cdkConnectedOverlayOrigin", 'positions': "cdkConnectedOverlayPositions", 'offsetX': "cdkConnectedOverlayOffsetX", 'offsetY': "cdkConnectedOverlayOffsetY", 'width': "cdkConnectedOverlayWidth", 'height': "cdkConnectedOverlayHeight", 'minWidth': "cdkConnectedOverlayMinWidth", 'minHeight': "cdkConnectedOverlayMinHeight", 'backdropClass': "cdkConnectedOverlayBackdropClass", 'panelClass': "cdkConnectedOverlayPanelClass", 'viewportMargin': "cdkConnectedOverlayViewportMargin", 'scrollStrategy': "cdkConnectedOverlayScrollStrategy", 'open': "cdkConnectedOverlayOpen", 'transformOriginSelector': "cdkConnectedOverlayTransformOriginOn", 'hasBackdrop': "cdkConnectedOverlayHasBackdrop", 'lockPosition': "cdkConnectedOverlayLockPosition", 'flexibleDimensions': "cdkConnectedOverlayFlexibleDimensions", 'growAfterOpen': "cdkConnectedOverlayGrowAfterOpen", 'push': "cdkConnectedOverlayPush" }, { 'backdropClick': "backdropClick", 'positionChange': "positionChange", 'attach': "attach", 'detach': "detach", 'overlayKeydown': "overlayKeydown" }, never>;
     static ɵfac: i0.ɵɵFactoryDef<CdkConnectedOverlay>;
 }
 

tools/public_api_guard/material/card.d.ts

@@ -17,7 +17,7 @@ export declare class MatCardAvatar {
 }
 
 export declare class MatCardContent {
-    static ɵdir: i0.ɵɵDirectiveDefWithMeta<MatCardContent, "mat-card-content", never, {}, {}, never>;
+    static ɵdir: i0.ɵɵDirectiveDefWithMeta<MatCardContent, "mat-card-content, [mat-card-content], [matCardContent]", never, {}, {}, never>;
     static ɵfac: i0.ɵɵFactoryDef<MatCardContent>;
 }