Re-loading cubemaps fail to load associated textures

[Astra307]

When re-loading a cubemap asset that has already been loaded once before (with the standard asset loader) it fails to load the associated texture files, leading to errors and failure to compile when applying it to the scene. The first time a cubemap is loaded however, it also loads the texture files automatically, and there's no hiccups applying it to the scene.

See this forum post for a more detailed description.

[slimbuck]

Do you have a simple repro case?

Looks like there should be a very simple fix for this. On the following line:
https://github.com/playcanvas/engine/blob/main/src/framework/handlers/cubemap.js#L294

onLoad() should be calling processTexAsset() instead (since processTexAsset checks the asset is loaded before continuing).

[Astra307]

Sorry I didn't make one..
Thx for fixing it anyways!!