Fixed a missing Render Target clear in the sky system that caused NaN…
{
if (skyContext.skyParametersHash != 0)
CoreUtils.ClearCubemap(cmd, m_SkyboxCubemapRT, Color.black, true);
if (m_SupportsConvolution)
CoreUtils.ClearCubemap(cmd, m_SkyboxGGXCubemapRT, Color.black, true);