fixup! fixup! fix(cdk/table): set default role of table to 'table'

Author: annieyw

src/cdk/table/cell.ts

@@ -183,9 +183,11 @@ export class CdkHeaderCell extends BaseCdkCell {
 export class CdkFooterCell extends BaseCdkCell {
   constructor(columnDef: CdkColumnDef, elementRef: ElementRef) {
     super(columnDef, elementRef);
-    const role = columnDef._table._elementRef.nativeElement
-      .getAttribute('role') === 'table' ? 'cell' : 'gridcell';
-    elementRef.nativeElement.setAttribute('role', role);
+    if (columnDef._table?._elementRef.nativeElement.nodeType === 1) {
+      const role = columnDef._table._elementRef.nativeElement
+        .getAttribute('role') === 'table' ? 'cell' : 'gridcell';
+      elementRef.nativeElement.setAttribute('role', role);
+    }
   }
 }
 
@@ -199,8 +201,10 @@ export class CdkFooterCell extends BaseCdkCell {
 export class CdkCell extends BaseCdkCell {
   constructor(columnDef: CdkColumnDef, elementRef: ElementRef) {
     super(columnDef, elementRef);
-    const role = columnDef._table._elementRef.nativeElement
-      .getAttribute('role') === 'table' ? 'cell' : 'gridcell';
-    elementRef.nativeElement.setAttribute('role', role);
+    if (columnDef._table?._elementRef.nativeElement.nodeType === 1) {
+      const role = columnDef._table._elementRef.nativeElement
+        .getAttribute('role') === 'table' ? 'cell' : 'gridcell';
+      elementRef.nativeElement.setAttribute('role', role);
+    }
   }
 }