bgfx caps Initialization during 1st rendered frame

[CedricGuillemet]

While doing tests for a partner on Android, I've noticed that if a render target is created in JS before having a frame rendered with bgfx, then is crashes here:

BabylonNative/Plugins/NativeEngine/Source/NativeEngine.cpp

Line 1457 in 581b4b4

assert(bgfx::isTextureValid(0, false, 1, format, BGFX_TEXTURE_RT));

It looks like the caps are not properly.
I didn't check other APIs
Also, note this happens with context initialization and not with a native window initialization.

The fix for my case is to render 1 frame during init.