FloatsToImage: should throw error when 1 < Channels > 4

[ccfontes]

Describe the bug FloatsToImage truncates number of Channels to:

• 4 when Channels parameter value is bigger than 4.
• 1 when Channels parameter value is lower than 1.

To Reproduce

[1.0 1.0 1.0] | FloatsToImage(Channels: 0) | Log
;=> Image Width: 16 Height: 16 Channels: 1

[1.0 1.0 1.0] | FloatsToImage(Channels: 5) | Log
;=> Image Width: 16 Height: 16 Channels: 4

Expected behavior FloatsToImage should throw error when 1 < Channels > 4.