Fix Camera2d.WorldToLocal to translate game.world.pos also

[pathak-prashant]

Description of change

WorldToLocal applies transformation on the passed vector if the camera has transformation applied to it, however it does not apply it to the game.world.pos which is added to get the file result. This results an incorrect world to local translation. This change copies the world pos vector to a local variable and applies transformation to it, before adding it to the vector.

Merge Checklist

• [ ] Build process passed (npm run build)
• [ ] Lint process passed (npm run lint)
• [ ] Tests passed (npm run test)

[pathak-prashant]

Cannot complete merge checklist as unable to run npm run lint because of attached error,

[pathak-prashant]

Something is not right. Checking more on this.