fix(ui): InvContextMenu.placement = 'auto-end'

This ensures the context menus don't get cut off when the window size is very small.

invokeai/frontend/web/src/common/components/InvContextMenu/InvContextMenu.tsx

@@ -95,6 +95,7 @@ export const InvContextMenu = typedMemo(
               isOpen={isDeferredOpen}
               gutter={0}
               onClose={onCloseHandler}
+              placement="auto-end"
               {...props.menuProps}
             >
               <InvMenuButton