fix(material/dialog): change width to not cut off form field in component example (#26157)

(cherry picked from commit 93818e5)

Author: amysorto

src/components-examples/material/dialog/dialog-overview/dialog-overview-example.ts

@@ -21,7 +21,6 @@ export class DialogOverviewExample {
 
   openDialog(): void {
     const dialogRef = this.dialog.open(DialogOverviewExampleDialog, {
-      width: '250px',
       data: {name: this.name, animal: this.animal},
     });