Replace decorated HTMLSlotElement property for compatibility with TypeScript's emitDecoratorMetadata. With decorator metadata, the constructor is emitted into the runtime, which will cause an "HTMLSlotElement is undefined" error in Edge and IE11.
Replace decorated HTMLSlotElement property for compatibility with TypeScript's emitDecoratorMetadata. With decorator metadata, the constructor is emitted into the runtime, which will cause an "HTMLSlotElement is undefined" error in Edge and IE11.

PiperOrigin-RevId: 260782839

material-components/material-web,material-components/material-web