[git] Replace git-gutter* with diff-hl? (It was "⛔ Emergency (emacsql): Uninstall the `git-commit' package" makes magit unusable)

[git] Replace git-gutter* with diff-hl? (It was "⛔ Emergency (emacsql): Uninstall the `git-commit' package" makes magit unusable) #8655