The motion has been slightly misreported/exaggerated. It says:
*In government, Labour will:
maintain and extend free movement of people as a workers’ right, opposing immigration systems based on incomes, migrants’ utility to big business, and number caps/targets;
ensure unconditional right to family reunion;
close all detention centres;
extend equal rights to vote to all UK residents;
end “no recourse to public funds” policies;
scrap all Hostile Environment measures, use of landlords and public service providers as border guards, and restrictions on migrants’ NHS access.*