[TS] add missing channel constants #1044

Job	Run time
cpp-lib-build (macos-11, clang, ON)	10m 34s
cpp-lib-build (macos-11, clang, OFF)	8m 26s
build (macos-11, tool)	2m 3s
build (macos-11, cpp)	42m 7s
cpp-lib-build (macos-11, gcc, ON)	8m 21s
build (macos-11, csharp)	14m 57s
cpp-lib-build (macos-11, gcc, OFF)	7m 57s
build (macos-11, dart)	5m 32s
cpp-lib-build (ubuntu-20.04, clang, ON)	3m 12s
build (macos-11, go)	5m 20s
cpp-lib-build (ubuntu-20.04, clang, OFF)	3m 49s
build (macos-11, java)	2m 16s
cpp-lib-build (ubuntu-20.04, gcc, ON)	4m 35s
build (macos-11, javascript)	3m 22s
cpp-lib-build (ubuntu-20.04, gcc, OFF)	5m 15s
cpp-lib-build (windows-2022, clang, ON)	4m 4s
build (macos-11, typescript)	19m 37s
cpp-lib-build (windows-2022, clang, OFF)	5m 22s
build (macos-11, php)	26s
cpp-lib-build (windows-2022, cl)	4m 39s
build (macos-11, python3)	2m 1s
build (ubuntu-20.04, tool)	56s
build (ubuntu-20.04, cpp)	17m 18s
build (ubuntu-20.04, csharp)	4m 55s
build (ubuntu-20.04, dart)	3m 47s
build (ubuntu-20.04, go)	2m 16s
build (ubuntu-20.04, java)	1m 9s
build (ubuntu-20.04, javascript)	1m 24s
build (ubuntu-20.04, typescript)	10m 0s
build (ubuntu-20.04, php)	1m 18s
build (ubuntu-20.04, python3)	1m 14s
build (windows-2022, tool)	2m 12s
build (windows-2022, cpp)	23m 12s
build (windows-2022, csharp)	6m 54s
build (windows-2022, dart)	4m 9s
build (windows-2022, go)	5m 22s
build (windows-2022, java)	2m 7s
build (windows-2022, javascript)	2m 32s
build (windows-2022, typescript)	21m 26s
build (windows-2022, php)	2m 11s
build (windows-2022, python3)	1m 41s
	4h 39m 58s

Provide feedback