Introduce `readOnly` state for input controls

[cheton]

Introduce a readOnly state for input controls, covering the following components:

• Checkbox
• DatePicker input
• Input
• Menu button
• Radio
• Textarea
• Switch

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[tusharrrr1]

Can work on this if possible for these changes?

[Samyra312007]

i would like to work on this issue, as a beginner this is the perfect entry point for me to begin my open source journey.