[Feature Request] Table: Native tri-state sorting & fallback sort descriptor

[stybo]

Context

HeroUI's Table currently supports only a 2-state toggle (asc ↔ desc). In data tables and integrations with headless libraries like TanStack Table, users frequently expect a 3-state cycle:
desc → asc → null / default.

Currently, developers must write custom click-tracking boilerplate in onSortChange to detect a 3rd click and restore an unsorted or default state.

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Proposed API

1. Tri-State / Allow Neutral Mode

Add allowRemoval or sortMode="tri-state" so onSortChange emits undefined on the 3rd click:

<Table.Column allowsSorting id="name" sortMode="tri-state">
  Name
</Table.Column>