🐛(frontend) fix share modal owner message shown to wrong user

The "only owner" message was displayed to all users when
viewing the last owner's access, instead of only showing
it to the owner themselves.

Also simplify role restriction message logic by checking
access.is_explicit instead of comparing available roles.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/frontend/apps/drive/src/features/explorer/components/modals/share/ItemShareModal.tsx

@@ -33,6 +33,7 @@ import { useQueryClient } from "@tanstack/react-query";
 import { useRouter } from "next/router";
 import { useEffect, useMemo, useRef, useState } from "react";
 import { useTranslation } from "react-i18next";
+import { useAuth } from "@/features/auth/Auth";
 
 type WorkspaceShareModalProps = {
   isOpen: boolean;
@@ -47,6 +48,7 @@ export const ItemShareModal = ({
 }: WorkspaceShareModalProps) => {
   const { t } = useTranslation();
   const queryClient = useQueryClient();
+  const { user } = useAuth();
   const copyToClipboard = useClipboard();
   const itemId = initialItem.originalId ?? initialItem.id;
   const { data: item, refetch: refetchItem } = useItem(itemId, {
@@ -359,19 +361,24 @@ export const ItemShareModal = ({
       accessRoleTopMessage={(access) => {
         const availableRoles = access.abilities.set_role_to;
         const maxNbRoles = Object.values(Role).length;
-        if (
+        const isLastOwner =
           ownerCount === 1 &&
           availableRoles.length === 0 &&
-          access.role === Role.OWNER
-        ) {
+          access.role === Role.OWNER;
+        if (isLastOwner) {
+          // If the current user is not the last owner, we don't show the message
+          if (user?.id !== access.user.id) {
+            return undefined;
+          }
+
           return t("share_modal.options.top_message.only_owner");
         }
-        if (availableRoles.length === 0 && access.role !== Role.OWNER) {
-          return t("share_modal.options.top_message.to_lower_role");
+
+        if (access.is_explicit) {
+          return undefined;
         }
 
         const canDelete = access.abilities.destroy && access.is_explicit;
-
         const showRedirection =
           !canDelete || availableRoles.length < maxNbRoles;