[@mantine/core] Image: Change fit prop type to include all possible…

… object-fit values (mantinedev#2245)

src/mantine-core/src/Image/Image.tsx

@@ -23,7 +23,7 @@ export interface ImageProps
   alt?: string;
 
   /** Image object-fit property */
-  fit?: 'contain' | 'cover';
+  fit?: React.CSSProperties['objectFit'];
 
   /** Image width, defaults to 100%, cannot exceed 100% */
   width?: number | string;