The issue you're encountering is related to TypeScript's type definitions not fully matching the runtime properties of SpineGameObject. The SpineGameObject in the spine-phaser runtime may have properties like height that are not explicitly defined in the TypeScript type definitions. This can happen if the type definitions are not fully up-to-date with the runtime or if certain properties are dynamically added at runtime.

To address this, you can extend the TypeScript definitions to include the missing properties. However, using any as a workaround, as you've done, is a quick solution to bypass TypeScript's type checking. If you want to maintain type safety, you could create a custom type definition that extends SpineGameObject to include the height property.

Here's a simple example of how you might extend the type:

interface ExtendedSpineGameObject extends Phaser.GameObjects.GameObject {
    height: number;
    // Add other properties as needed
}

const test = this.add.spine(0, 0, "spine-data", "spine-atlas") as ExtendedSpineGameObject;
test.setScale((this.game.config.height as number) / test.height);

This way, you can keep the benefits of TypeScript's type checking while ensuring that your code reflects the actual properties available at runtime.