Fix image ALT text issue

[monzuralam]

What?

Fixed: #818

Why?

The feature card image on the AI Home stage rendered with an empty alt attribute (alt=""), which marks the image as decorative. Since the image illustrates the feature the card represents, it carries meaningful content and should expose an accessible name. As written, screen reader users get no information about the image, failing WCAG 1.1.1 (Non-text Content).

How?

Set the image's alt attribute to the feature's label so it exposes a meaningful, human-readable description instead of an empty string:

- <img alt="" loading="lazy" src={ feature.image } />
+ <img alt={ feature.label } loading="lazy" src={ feature.image } />

feature.label is already the user-facing name for the card's feature, so it stays in sync with the displayed content and is localized alongside the rest of the card.

Use of AI Tools

No

Testing Instructions

1. Open the AI Home settings screen where the feature/showcase cards are displayed.
2. Inspect a feature card image in the browser DevTools.
3. Confirm the <img> now has a non-empty alt attribute matching the feature's label (e.g. alt="<Feature name>").
4. Optionally, verify with a screen reader (VoiceOver / NVDA) that the image announces the feature label rather than being skipped or read as an empty/decorative image.

Screenshots or screencast

Before	After
<img alt="">	<img alt="<Feature label>">

Changelog Entry

Fixed - Added descriptive alt text to AI Home feature card images for improved screen reader accessibility.

[github-actions]

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Co-authored-by: monzuralam <monzuralam@git.wordpress.org>
Co-authored-by: dkotter <dkotter@git.wordpress.org>

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.50%. Comparing base (9db55ee) to head (66e50d3).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #819   +/-   ##
==========================================
  Coverage      75.50%   75.50%           
  Complexity      2086     2086           
==========================================
  Files             99       99           
  Lines           8626     8626           
==========================================
  Hits            6513     6513           
  Misses          2113     2113           

Flag	Coverage Δ
unit	75.50% <ø> (ø)

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[dkotter]

Not sure the feature label is necessarily the correct alt text to use here but I guess better than having nothing