fix(ObjectPage): remove unnecessary banner role (#4532)

Fixes #4491

Author: Lukas742

packages/main/src/components/ObjectPage/index.tsx

@@ -743,7 +743,7 @@ const ObjectPage = forwardRef<HTMLDivElement, ObjectPagePropTypes>((props, ref)
         onMouseLeave={onHoverToggleButton}
         data-component-name="ObjectPageTopHeader"
         ref={topHeaderRef}
-        role={a11yConfig?.objectPageTopHeader?.role ?? 'banner'}
+        role={a11yConfig?.objectPageTopHeader?.role}
         data-not-clickable={titleHeaderNotClickable}
         aria-roledescription={a11yConfig?.objectPageTopHeader?.ariaRoledescription ?? 'Object Page header'}
         className={classes.header}