fix: remove optional check

Author: marcosmoura

packages/react-components/react-drawer/library/src/components/OverlayDrawer/OverlayDrawer.types.ts

@@ -55,5 +55,5 @@ export type OverlayDrawerProps = ComponentProps<OverlayDrawerSlots> &
 export type OverlayDrawerState = ComponentState<OverlayDrawerInternalSlots> &
   Required<DrawerBaseState> &
   Pick<OverlayDrawerProps, 'mountNode'> & {
-    hasMountNodeElement?: boolean;
+    hasMountNodeElement: boolean;
   };

packages/react-components/react-drawer/library/src/components/OverlayDrawer/useOverlayDrawerStyles.styles.ts

@@ -47,7 +47,7 @@ export const useOverlayDrawerStyles_unstable = (state: OverlayDrawerState): Over
   const resetStyles = useDrawerResetStyles();
   const rootStyles = useDrawerRootStyles();
 
-  const absoluteStyles = !!state.hasMountNodeElement && rootStyles.absolute;
+  const absoluteStyles = state.hasMountNodeElement && rootStyles.absolute;
   const backdrop = state.root.backdrop as React.HTMLAttributes<HTMLDivElement> | undefined;
 
   state.root.className = mergeClasses(