Navbar item with icon and text renders an unnamed role="img" icon

从 navicon.ejs 开始，然后检查它在 sidebaritem.ejs、navitem-dropdown.ejs 和 nav-footer-navitem.ejs 中的用法，了解如何区分带文本的项目和仅含图标的项目。使用提供的 _quarto.yml 和 index.qmd 重现问题，然后运行 quarto render 和所示的 axe 命令。完成标准是：带文本的图标应为装饰性图标，而仅含图标的情况应保留可访问名称。

I have:

• searched the issue tracker for similar issues
• installed the latest version of Quarto CLI
• formatted my issue following the Bug Reports guide

Bug description

A navbar item with both icon and text renders its icon as role="img" with no accessible name.
axe reports role-img-alt (WCAG 1.1.1) on every page.

The link text already names the link, so the icon is decorative.
There is no option to say so: icon takes only a string, and navicon.ejs always writes role="img".
The only attribute it passes on is the item's aria-label, which goes on the icon, not the link.
The link then reads its name twice, for example "external link Blog".

navicon.ejs is also used by sidebaritem.ejs, navitem-dropdown.ejs and nav-footer-navitem.ejs, so sidebar, menu and footer items with an icon and text behave the same way.

• #15038 covers icon-only navbar links, which is a different case.

Steps to reproduce

_quarto.yml:

project:
  type: website
website:
  title: "Navbar icon"
  navbar:
    left:
      - text: "Overview"
        icon: house
        href: index.qmd

index.qmd:

---
title: "Home"
---

Home page.

Then:

quarto render
quarto call axe _site --viewports 1440x900
jq -r '.findings[].signature' _axe-checks/findings.json

Actual behavior

<a class="nav-link active" href="./index.html" aria-current="page"> <i class="bi bi-house" role="img"> </i> <span class="menu-text">Overview</span></a>

findings.json lists role-img-alt :: i (plus region :: #quarto-skip-link, which is unrelated).

Expected behavior

When the item has text, the icon is decorative: <i class="bi bi-house" aria-hidden="true"></i>.
role="img" with a name is only needed for icon-only items, and the item's aria-label names the link rather than the icon.

Your environment

• IDE: none, command line.
• OS: macOS 27.0.
• The same output comes from a current development build (99.9.9).

Quarto check output

Quarto 1.11.6
[✓] Checking environment information...
      Quarto cache location: /Users/mcanouil/Library/Caches/quarto
      Project root: /private/tmp/claude-501/-Users-mcanouil-Projects-quarto-dev-quarto-web/e598806e-b79f-4883-9554-648d53816f11/scratchpad/repro-sidebar
      Project config: /private/tmp/claude-501/-Users-mcanouil-Projects-quarto-dev-quarto-web/e598806e-b79f-4883-9554-648d53816f11/scratchpad/repro-sidebar/_quarto.yml

[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.10.0: OK
      Dart Sass version 1.101.0: OK
      Deno version 2.7.14: OK
      Typst version 0.15.1: OK

[✓] Checking versions of quarto dependencies......OK

[✓] Checking Quarto installation......OK
      Version: 1.11.6
      Path: /private/tmp/claude-501/-Users-mcanouil-Projects-quarto-dev-quarto-web/e598806e-b79f-4883-9554-648d53816f11/scratchpad/quarto-1.11.6/bin

[✓] Checking tools....................OK
      TinyTeX: v2026.07
      Chrome Headless Shell: (not installed)
      VeraPDF: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/mcanouil/Library/TinyTeX/bin/universal-darwin
      Version: 2026

[✓] Checking Chrome Headless....................OK
      Using: Chrome from QUARTO_CHROMIUM
      Path: /Applications/Brave Browser.app/Contents/MacOS/Brave Browser

[✓] Checking basic markdown render....OK
ℹ R version 4.6.1 (2026-06-24)
! Config '~/.Rprofile' was loaded!

[✓] Checking R installation...........OK
      Version: 4.6.1
      Path: /Library/Frameworks/R.framework/Versions/4.6/Resources
      LibPaths:
        - /Users/mcanouil/Library/R/arm64/4.6/library
        - /Library/Frameworks/R.framework/Versions/4.6/Resources/library
      knitr: 1.51
      rmarkdown: 2.31

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

[✓] Checking Python 3 installation....OK
      Version: 3.12.13
      Path: /Users/mcanouil/Projects/quarto-dev/quarto-web/.venv/bin/python3
      Jupyter: 5.9.1
      Kernels: julia-1.12, python3
[IPKernelApp] WARNING | Kernel is running over TCP without encryption. All communication (including code and outputs) is sent in plain text and is susceptible to eavesdropping. Use IPC transport or launch with kernel manager-provisioned CurveZMQ keys to enable transport encryption.

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

[✓] Checking Julia installation...