Product Category: Allow filtering by mpath in query types

[Attachai77]

Currently, filtering by mpath works when using @ts-ignore, but the TypeScript types don’t officially support it.
It would be great if the mpath field could be included in the type definitions for product_category so we can use it without ignoring type errors.

			const { data: childrenCategories } = await query.graph({
				entity: 'product_category',
				fields: ['id', 'name', 'mpath'],
				filters: {
					//@ts-ignore
					mpath: {
						$like: `%${categoryId}%`,
					},
				},
			});