fixup! feat(material-experimental): MDC-based version of dialog

Potential fix for test failure in g3

Author: devversion

src/material/dialog/dialog.ts

@@ -147,6 +147,9 @@ export abstract class _MatDialogBase<C extends _MatDialogContainerBase> implemen
     dialogRef.afterClosed().subscribe(() => this._removeOpenDialog(dialogRef));
     this.afterOpened.next(dialogRef);
 
+    // Notify the dialog container that the content has been attached.
+    dialogContainer._initializeWithAttachedContent();
+
     return dialogRef;
   }
 
@@ -263,9 +266,6 @@ export abstract class _MatDialogBase<C extends _MatDialogContainerBase> implemen
       .updateSize(config.width, config.height)
       .updatePosition(config.position);
 
-    // Notify the dialog container that the content has been attached.
-    dialogContainer._initializeWithAttachedContent();
-
     return dialogRef;
   }