Avoid showing private methods for external references #11266

Job	Run time
lint_ruby	22s
Ruby 3.1 on ubuntu-latest	15m 33s
Ruby 3.2 on ubuntu-latest	14m 7s
spelling	12s
Ruby 3.3 on ubuntu-latest	16m 32s
build_node (ubuntu-latest)	1m 38s
Ruby 3.1 on macos-latest	9m 18s
build_node (macos-latest)	1m 21s
Ruby 3.2 on macos-latest	8m 43s
lint_node	30s
build_node (windows-latest)	6m 27s
Verify Jekyll website builds	9s
Ruby 3.3 on macos-latest	8m 2s
Ruby 3.1 on windows-latest	23m 27s
Ruby 3.2 on windows-latest	22m 56s
Ruby 3.3 on windows-latest	21m 36s
	2h 30m 53s

Provide feedback