Fetching component values in script only works in const expression

[KenthJohan]

Describe the bug
Using example from https://www.flecs.dev/flecs/md_docs_2FlecsScript.html#component-values

To Reproduce

struct Level {
	width = i32
	depth = i32
}

struct Grid {
	x = i32
	y = i32
}

Game {
	Level : {5, 7}
}

const level: Game[Level]

grid1 {
	Grid: { $level.width, $level.depth }
}

/*
A script can use the value of a component that is looked up on a specific entity. 
The following example fetches the width and depth members from the Level component, that is fetched from the Game entity:

error: script1.flecs: 22: cannot cast identifier 'Game' to flecs.meta.i32
  Grid: { Game[Level].width, Game[Level].depth }
*/
grid2 {
	Grid: { Game[Level].width, Game[Level].depth }
}

Expected behavior
In grid2 entity it should evaluate component value of width and depth.

[SanderMertens]

Fixed!