🏷️ fix: Editing Bookmark Descriptions (#10685)

* fix: exclude the currently edited bookmark from duplicate checks

* ci: Add comprehensive tests for BookmarkForm component

- Introduced a new test suite for the BookmarkForm component to validate bookmark editing functionality.
- Implemented tests for various scenarios including editing descriptions, renaming tags, and handling duplicate tags.
- Ensured proper feedback through toasts for error cases and successful submissions.
- Mocked necessary hooks and context to isolate component behavior during tests.

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

client/src/components/Bookmarks/BookmarkForm.tsx

@@ -72,7 +72,7 @@ const BookmarkForm = ({
     }
     const allTags =
       queryClient.getQueryData<TConversationTag[]>([QueryKeys.conversationTags]) ?? [];
-    if (allTags.some((tag) => tag.tag === data.tag)) {
+    if (allTags.some((tag) => tag.tag === data.tag && tag.tag !== bookmark?.tag)) {
       showToast({
         message: localize('com_ui_bookmarks_create_exists'),
         status: 'warning',