update indirectLight dynamically in android app

**Describe the bug**
in my demo, i load indirectLight from ktx file whick generated from cmgen util. it work perfectly.
but when i want change a different indirectLight at some later time, AFTER call loadIblKtx() there is
no any change.
by the way, i see a same solution in androd sample glft-viewer.
this is my code:
```
private fun loadIblKtx(buff: Buffer) {
Log.d(TAG, "load ibl ktx")
val engine = modelViewer.engine
engine.destroyIndirectLight(modelViewer.scene.indirectLight!!)
KTX1Loader.createIndirectLight(modelViewer.engine, buff)
.apply {
intensity = 100f
modelViewer.scene.indirectLight = this
viewerContent.indirectLight = this
}
}
```

the sample gltfview has ability to support dragging hdr file to https://google.github.io/filament/remote/
can U give me a avaiable hdr file to try? all hdr file i try will crash the android app.

**Smartphone (please complete the following information):**
- Device: xiaomi red note
- OS: android 11

Start at the loadIblKtx() entry point and KTX1Loader.createIndirectLight call, then compare the replacement flow with the gltf-viewer sample mentioned in the issue. Reproduce changing indirectLight after the initial load and test an HDR file that triggers the Android crash; done means the replacement takes effect and HDR loading no longer crashes.

Written by the indexing model from the issue text.