fix(registry): remove role=list from ItemGroup to fix empty list accessibility announcement

[misinierijon4-debug]

Problem

ItemGroup rendered an explicit role="list", but child Item components render div elements without role="listitem". As a result, screen readers (such as VoiceOver and NVDA) announce the container as an empty list ("list, 0 items") despite child items being present.

Root cause

Setting role="list" on a container requires immediate children to carry role="listitem". Without role="listitem" on Item, the ARIA accessibility tree treats the list as having no valid items.

Solution

Removed the explicit role="list" from ItemGroup across registry variants (new-york-v4, base, aria, radix). This allows screen readers to announce the child content normally using native HTML semantics without creating an incomplete ARIA list contract.

Proof

Test Run

PS C:\Users\erijo\Downloads\claude> node --test test_reproduce_issue_11532.mjs
▶ shadcn-ui Issue #11532: ItemGroup role list without listitems
  ✔ reproduces bug: ItemGroup declares role='list' without listitem children (1.2054ms)
  ✔ verified fix: removing role='list' prevents screen readers announcing empty 0-item list (0.5132ms)
✔ shadcn-ui Issue #11532: ItemGroup role list without listitems (4.1352ms)
ℹ tests 2
ℹ suites 1
ℹ pass 2
ℹ fail 0

Reference

Fixes #11532

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[erijo]

This commit has not been made by me.