Pull request overview

Removes the deprecated components / componentsProps API from Alert in MUI Material, aligning the component with the slots / slotProps customization model and updating related tests/types/docs for v9.

Changes:

• Removed components and componentsProps handling from packages/mui-material/src/Alert/Alert.js and from the public TypeScript types.
• Updated Alert tests to use slots / slotProps for close button/icon customization.
• Updated API docs JSON + added a v9 migration note documenting the removed props.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated no comments.

const Alert = React.forwardRef(function Alert(inProps, ref) {
  const props = useDefaultProps({ props: inProps, name: 'MuiAlert' });
  const {
    action,
    children,
    className,
    closeText = 'Close',
    color,
    icon,
    iconMapping = defaultIconMapping,
    onClose,
    role = 'alert',
    severity = 'success',
    slotProps = {},
    slots = {},
    variant = 'standard',
    ...other
  } = props;

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