fix: use absolute paths for sidebar session navigation (#12898)

packages/app/src/pages/layout/sidebar-items.tsx

@@ -144,7 +144,7 @@ export const SessionItem = (props: SessionItemProps): JSX.Element => {
 
   const item = (
     <A
-      href={`${props.slug}/session/${props.session.id}`}
+      href={`/${props.slug}/session/${props.session.id}`}
       class={`flex items-center justify-between gap-3 min-w-0 text-left w-full focus:outline-none transition-[padding] ${props.mobile ? "pr-7" : ""} group-hover/session:pr-7 group-focus-within/session:pr-7 group-active/session:pr-7 ${props.dense ? "py-0.5" : "py-1"}`}
       onPointerEnter={scheduleHoverPrefetch}
       onPointerLeave={cancelHoverPrefetch}
@@ -285,7 +285,7 @@ export const NewSessionItem = (props: {
   const tooltip = () => props.mobile || !props.sidebarExpanded()
   const item = (
     <A
-      href={`${props.slug}/session`}
+      href={`/${props.slug}/session`}
       end
       class={`flex items-center justify-between gap-3 min-w-0 text-left w-full focus:outline-none ${props.dense ? "py-0.5" : "py-1"}`}
       onClick={() => {