fix: added rel prop in switcher item

[riddhybansal]

Closes #17052

Added optional 'rel' prop to BaseSwitcherItemProps.

New
Added rel prop to BaseSwitcherItemProps

Testing / Reviewing

<Switcher aria-label="Switcher Container" expanded={true}>
  <SwitcherItem aria-label="Link 1" href="#" rel="norelerror">
    Link 1
  </SwitcherItem>
</Switcher>

Test the usage of SwitcherItem with the rel prop in a TypeScript environment within a Switcher component. Verify that the TypeScript compiler should not throw error and the component renders without errors and correctly applies the provided rel attribute

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[tay1orjones]

Looks good! Just one question

[tay1orjones]

Is there a specific type off of HTMLAttributes or DOMAttributes or something that we could use here? It's not any string - it's one of a specific set of allowed/expected strings, right?

MDN's list is "some of the most important existing keywords" 🤔 very possible this doesn't exist but figured I'd ask

[riddhybansal]

Yes we cannot add any string there are some specific keywords that can be used . What do you think should I create an interface and made rel at that type ??