Host-side announcer: the current message to pass as AriaCompanion's
announcement, and the setter to call from the event sites the host
owns (a trace step, a filter change). Debounce and muting live on the
component, so every host gets them with the same two props.
Host-side announcer: the current message to pass as AriaCompanion's
announcement, and the setter to call from the event sites the host owns (a trace step, a filter change). Debounce and muting live on the component, so every host gets them with the same two props.