Extract shared behaviour of test disco listeners #13664

Job	Run time
lint_node	32s
build_node (ubuntu-latest)	2m 8s
lint_ruby	35s
build_node (macos-latest)	2m 17s
Ruby 3.1 on ubuntu-latest	10m 59s
spelling	15s
build_node (windows-latest)	6m 0s
Ruby 3.2 on ubuntu-latest	11m 46s
Verify Jekyll website builds	7s
Ruby 3.3 on ubuntu-latest	10m 25s
Ruby 3.4 on ubuntu-latest	10m 20s
Ruby 3.1 on macos-latest	8m 35s
Ruby 3.2 on macos-latest	7m 38s
Ruby 3.3 on macos-latest	6m 42s
Ruby 3.4 on macos-latest	5m 42s
Ruby 3.1 on windows-latest	22m 20s
Ruby 3.2 on windows-latest	24m 6s
Ruby 3.3 on windows-latest	23m 41s
Ruby 3.4 on windows-latest	24m 53s
	2h 59m 1s

Provide feedback