PR Description

Fix: Prevent keyboard from appearing on Select dropdown tap

Problem

On mobile devices, tapping a Select dropdown causes the keyboard to appear, which is unnecessary and blocks the dropdown menu.

Solution

Added theme-level configuration to prevent the keyboard from appearing when Select components are tapped.

Changes

• Added defaultProps to MuiSelect in theme configuration
• Set inputProps.readOnly: true (official MUI recommendation)
• Added inputMode: 'none' to explicitly prevent mobile keyboard
• Disabled MenuProps auto-focus to prevent keyboard triggers

Result

• Keyboard no longer appears when tapping Select dropdowns
• Applies globally to all Select components automatically
• Uses MUI's recommended approach

Testing

Test on mobile devices: tap any Select dropdown and verify the keyboard does not appear.

Closes #265