fix visibility exposed by rpc utest failure (#129) #691

Job	Run time
clang-tidy	11m 34s
clang-format	20s
Build (macos-arm64)	9m 2s
Build (macos-x64)	1h 11m 13s
Pin Check / Pin Check	15s
Build (windows-x64)	43m 37s
Build (linux-arm64)	17m 18s
Build (linux-x64)	17m 26s
License Check / License Check	4s
Build (docker-linux-arm64)	-1s
Build (cpp-example-collection-x64)	0s
Build (cpp-example-collection-linux-arm64)	0s
Build (docker-linux-x64)	-1s
Build (docker-linux-x64)	-7518s
Build (macos-x64)	27m 35s
Build (linux-x64)	17m 26s
Build (linux-arm64)	17m 18s
Pin Check / Pin Check	15s
clang-format	20s
clang-tidy	11m 34s
Build (docker-linux-arm64)	-7518s
Build (cpp-example-collection-x64)	-7517s
License Check / License Check	4s
Build (cpp-example-collection-linux-arm64)	-7517s
Build (windows-x64)	43m 37s
Build (macos-arm64)	9m 2s
	-12192s

Provide feedback