`target` parameter not working on dropdown items on top navigation bar

Bug description

There is target option on navigation link which allows to open links in new window, but it's not working on dropdown menus.

Steps to reproduce

_quarto.yml:

project:
  type: website

website:
  title: "Test"
  page-navigation: true
  navbar:
    left:
      - text: "External"
        href: "http://example.com"
        target: "_blank"

      - sidebar:drop

  sidebar:
    - id: drop
      title: "Dropdown"
      contents:.
        - text: "External not working"
          href: "http://example.com"
          target: "_blank"

format:
    html: default

index.qmd:

---
title: Test
---

# Header

run quarto render

open _site/index.html

Click on link "External" -- opens on new page

Click on link "External not working" -- opens on the same page

Expected behavior

Option target working on dropdown menu items

Actual behavior

Option target not working on dropdown menu items

Your environment

Quarto 1.5.25

Quarto check output

Quarto 1.5.25
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.11: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.41.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.5.25
      Path: /opt/quarto/bin

[✓] Checking tools....................OK
      Chromium: 869685
      TinyTeX: (not installed)

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /usr/bin
      Version: undefined

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.11.8
      Path: /usr/bin/python3
      Jupyter: 5.7.2
      Kernels: haskell, python3

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
      Version: 4.3.3
      Path: /usr/lib64/R
      LibPaths:
        - /home/andrei/R/x86_64-pc-linux-gnu-library/4.3
        - /usr/lib/R/library
      knitr: 1.45
      rmarkdown: 2.25

[✓] Checking Knitr engine render......OK