[InputBase][material-next] InputBase slotProps accepts sx type

[mj12albert]

Part of #38372

This PR ports the fix in #39569 to material-next

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[mui-bot]

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[ZeeshanTamboli]

Shouldn't Material Next have slotProps types similar to Joy UI, as shown here? This will account for the sx type in each component's slotProps and thus we won't need to add it separately.

[mj12albert]

Shouldn't Material Next have slotProps types similar to Joy UI

@ZeeshanTamboli It uses SlotComponentProps from Base UI, so we'd have to add these manually for now

Though we could probably modify SlotComponentProps to accept another type argument to handle this later

[ZeeshanTamboli]

Though we could probably modify SlotComponentProps to accept another type argument to handle this later

I meant to create a distinct type for Material Next, similar to Joy UI. This type can utilize Base UI's SlotComponentProps but also includes sx props. However, let's address this later.