Fix constructor parameters for ChannelSplitterNode and ChannelMergerNode.
Fix constructor parameters for ChannelSplitterNode and ChannelMergerNode.

PiperOrigin-RevId: 482698650

google/closure-compiler,google/closure-compiler,monetate/closure-compiler,monetate/closure-compiler,monetate/closure-compiler,google/closure-compiler,google/closure-compiler,monetate/closure-compiler