Document overriding slots.root
It is not clear that/how v9 root slot can be overriden.
Document how the slot can be overriden in order to use composition to address issues like the ones described in #21289 and #21290.
Let's keep this blocked while there's still RFC discussion going on about slots https://github.com/microsoft/fluentui/pull/22480
- Add documentation to preview section
- Explain how to compose components and override
state.components.X
See: https://github.com/microsoft/fluentui/pull/23355
Also #24290
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