fix(VaButton): added pointer events for disabled buttons

[ahmadJT]

Description

• remove pointer-events none from va-disabled mixin

Closes

• VaButton: disabled button removes any pointer events #4288

Markup:

Details

@mixin va-disabled() {
  cursor: default;
  opacity: 0.4;
  pointer-events: none;
  user-select: none;
}

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Improvement/refactoring (non-breaking change that doesn't add any feature but make things better)

[m0ksem]

Thanks! ❤️