mypy: Fix process_fts_updates annotations.
mypy: Fix process_fts_updates annotations.

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