[Feature]: useAnnounce - Support aria-live="off" value

[spenoff]

Area

React Components (@fluentui/react-components)

Describe the feature that you would like added

The v9 useAnnounce hook does not support setting aria-live to "off". In v8, the Announced component supported this value, which is essential for:

• Temporarily disabling announcements during batch updates
• Preventing announcement storms when multiple state changes occur rapidly
• Conditional announcement behavior based on user preferences or context
  Current workaround: account.microsoft.com (AMC) must conditionally skip calling useAnnounce entirely when aria-live should be "off", which creates different code paths and is error-prone.

Additional context

Was supported by the V8 Announced component

Have you discussed this feature with our team

No response

Validations

• Check that there isn't already an issue that requests the same feature to avoid creating a duplicate.

Priority

Medium