serenity is change dialog width

1// In MyEntityDialog.ts
2protected onDialogOpen(): void {
3	$(".s-MyModule-MyEntityDialog").width("820px");
4    super.onDialogOpen();
5}
6// or in .less file
7.s-MyModule-MyEntityDialog {
8    > .size {
9        width: 820px;
10    }
11}