remove styles to fix button behaviors

apps/app/src/components/Sidebar/SidebarNav/SidebarNav.module.scss

@@ -3,10 +3,6 @@
 @use '~/styles/variables' as var;
 
 .grw-sidebar-nav :global {
-  // set position and z-index to prevent dropdowns covered by other element
-  position: relative;
-  z-index: bs.$zindex-fixed;
-
   width: var.$grw-sidebar-nav-width;
 
   border-right : 1px solid var(--bs-border-color);