NGE texture cannot load an exr file

[PatrickRyanMS]

When passing an exr file to the node geometry editor texture block, we get an error saying that exr cannot generate mips. While this is true, there's no reason for Node Geometry to need mip map for a texture passed to the graph.

Repro:
https://playground.babylonjs.com/#QNWTE5

[deltakosh]

Closing as discussed offline. The mipmap issue is coming from the Task reader which is configured to get mipmap data (while the data is float).
Solution is to call it this way:

const heightMap = manager.addTextureTask("heightMap", "[https://patrickryanms.github.io/BabylonJStextures/Demos/ngeDisplacement/heightMap_height.exr"](https://patrickryanms.github.io/BabylonJStextures/Demos/ngeDisplacement/heightMap_height.exr%22), true);