fix: switch ref forwarding

[arasfeld]

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Summary

The Switch component was converted from a React class component to a functional component between v3 and v4, but was not converted to use React.forwardRef(). Because of this, Switch components do not accept refs in v4.

Here is a bug for the same issue that got closed in December due to inactivity: https://github.com/callstack/react-native-paper/issues/2408

Test plan

1. Create a Switch component and provide a ref as a prop
2. Call a native function on the ref like .focus()
3. Verify the native function is successful and no React warnings/errors are thrown

[callstack-bot]

Hey @arasfeld, thank you for your pull request 🤗. The documentation from this branch can be viewed here.

[brunohkbx]

@arasfeld thanks for opening this PR. I tried to pass a ref to a switch in the example example/src/Examples/SwitchExample.tsx but I got focus is not a function Does it work in this RN version?

[github-actions[bot]]

Hello 👋, this pull request has been open for more than 2 months with no activity on it. If you think this is still necessary with the latest version, please comment and ping a maintainer to get this reviewed, otherwise it will be closed automatically in 7 days.