Merge branch 'gr/t1410-reflog-exit-code'

The pipelines in 't1410-reflog.sh' have been replaced with the 'test_stdout_line_count' helper to avoid suppressing the exit code of 'git' commands, ensuring failures are not hidden from the test suite. * gr/t1410-reflog-exit-code: t1410-reflog.sh: avoid suppressing git's exit code in pipelines