[jj] fix multi-remote bug in `jj push`

without checking the value of `remote`, we would print `main` once for
each remote, sometimes causing an attempt to track the (non-existent)
bookmark named `mainmain` due to the remotes `origin` and `tangled`.

private_dot_config/private_jj/config.toml

···
 [[ -n "$pushable" ]] && jj git push || echo "Nothing to push."
 closest="$(jj log -r 'closest_bookmark(@)' -n 1 -T 'bookmarks' --no-graph | cut -d ' ' -f 1)"
 closest="${closest%\\*}"
-tracked="$(jj bookmark list -r ${closest} -t -T 'if(remote, name)')"
+tracked="$(jj bookmark list -r ${closest} -t -T 'if(remote == "origin", name)')"
 [[ "$tracked" == "$closest" ]] || jj bookmark track "${closest}@origin"
 """]