Button

A tappable button with a text label. Renders using theme-aware primitives. Supports hover and disabled visual states.

Constructor

Creates a Button element.

Parameter	Description
`label`	The text label to display.
`onPressed`	The callback invoked on press. Null means disabled.
`key`	An optional key for reconciliation identity.

The text label displayed on the button.

The callback invoked when the button is pressed. Null means the button is disabled.