bots: Fix help bot replies in private chat, including 3+ users.
bots: Fix help bot replies in private chat, including 3+ users.

Also deduplicates the code.

rht/zulip,tommyip/zulip,dhcrzf/zulip,punchagan/zulip,Galexrt/zulip,verma-varsha/zulip,eeshangarg/zulip,showell/zulip,verma-varsha/zulip,rht/zulip,punchagan/zulip,zulip/zulip,tommyip/zulip,rishig/zulip,vabs22/zulip,mahim97/zulip,amanharitsh123/zulip,eeshangarg/zulip,kou/zulip,kou/zulip,rishig/zulip,j831/zulip,j831/zulip,timabbott/zulip,eeshangarg/zulip,showell/zulip,dhcrzf/zulip,zulip/zulip,shubhamdhama/zulip,shubhamdhama/zulip,andersk/zulip,dhcrzf/zulip,timabbott/zulip,amanharitsh123/zulip,punchagan/zulip,zulip/zulip,rishig/zulip,dhcrzf/zulip,brockwhittaker/zulip,hackerkid/zulip,rishig/zulip,hackerkid/zulip,mahim97/zulip,eeshangarg/zulip,shubhamdhama/zulip,brainwane/zulip,synicalsyntax/zulip,Galexrt/zulip,zulip/zulip,verma-varsha/zulip,brainwane/zulip,verma-varsha/zulip,andersk/zulip,synicalsyntax/zulip,tommyip/zulip,shubhamdhama/zulip,eeshangarg/zulip,punchagan/zulip,punchagan/zulip,christi3k/zulip,hackerkid/zulip,christi3k/zulip,jrowan/zulip,synicalsyntax/zulip,zulip/zulip,dhcrzf/zulip,synicalsyntax/zulip,mahim97/zulip,Galexrt/zulip,verma-varsha/zulip,timabbott/zulip,showell/zulip,brockwhittaker/zulip,shubhamdhama/zulip,jackrzhang/zulip,jackrzhang/zulip,brockwhittaker/zulip,jrowan/zulip,j831/zulip,rishig/zulip,timabbott/zulip,mahim97/zulip,jackrzhang/zulip,verma-varsha/zulip,hackerkid/zulip,Galexrt/zulip,kou/zulip,rht/zulip,dhcrzf/zulip,brainwane/zulip,showell/zulip,brainwane/zulip,vaidap/zulip,tommyip/zulip,shubhamdhama/zulip,timabbott/zulip,tommyip/zulip,vabs22/zulip,showell/zulip,j831/zulip,tommyip/zulip,brainwane/zulip,vaidap/zulip,vaidap/zulip,tommyip/zulip,brockwhittaker/zulip,j831/zulip,zulip/zulip,dhcrzf/zulip,showell/zulip,mahim97/zulip,brockwhittaker/zulip,eeshangarg/zulip,eeshangarg/zulip,hackerkid/zulip,andersk/zulip,showell/zulip,amanharitsh123/zulip,amanharitsh123/zulip,kou/zulip,punchagan/zulip,synicalsyntax/zulip,brockwhittaker/zulip,rht/zulip,jrowan/zulip,hackerkid/zulip,kou/zulip,brainwane/zulip,vaidap/zulip,Galexrt/zulip,vabs22/zulip,andersk/zulip,jrowan/zulip,rishig/zulip,rht/zulip,jackrzhang/zulip,mahim97/zulip,amanharitsh123/zulip,amanharitsh123/zulip,andersk/zulip,jackrzhang/zulip,j831/zulip,rht/zulip,Galexrt/zulip,christi3k/zulip,andersk/zulip,rishig/zulip,vabs22/zulip,jackrzhang/zulip,kou/zulip,vaidap/zulip,vabs22/zulip,rht/zulip,punchagan/zulip,vaidap/zulip,christi3k/zulip,brainwane/zulip,timabbott/zulip,jrowan/zulip,andersk/zulip,jrowan/zulip,vabs22/zulip,synicalsyntax/zulip,hackerkid/zulip,jackrzhang/zulip,zulip/zulip,synicalsyntax/zulip,kou/zulip,christi3k/zulip,shubhamdhama/zulip,timabbott/zulip,Galexrt/zulip,christi3k/zulip