Fix bug where radio.select passes the previous value to the function instead of the selected value (#6262)
* ensure radios have different names
* reinstate demo
* fix type
* fix ts error
* Add unit test
* check select
* add changeset
* add changeset
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Co-authored-by: pngwn <hello@pngwn.io>
Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>