Remove unnecessary aria-required property from container element (#8746)

Author: paulcam206

source/nodejs/adaptivecards/src/card-elements.ts

@@ -3557,7 +3557,6 @@ export abstract class Input extends CardElement implements IInput {
             this._renderedInputControlElement.style.minWidth = "0px";
 
             if (this.isNullable && this.isRequired) {
-                this._renderedInputControlElement.setAttribute("aria-required", "true");
                 this._renderedInputControlElement.classList.add(
                     hostConfig.makeCssClassName("ac-input-required")
                 );