fix: keyboard functionality works in readonly in fast-switch #6304
Description
🐛 Bug Report
When using fast-switch with readonly attribute, if we focus on switch and use space key, it toggles the switch
💻 Repro or Code Sample
link - https://codesandbox.io/s/web-component-header-test-forked-lq0jkh
🤔 Expected Behavior
switch should not toggle with keyboard when readonly attribute is present
😯 Current Behavior
switch is toggling with keyboard when readonly attribute is present