mypy: Initialize search_term to {} rather than None & avoid Optional.
mypy: Initialize search_term to {} rather than None & avoid Optional.

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