refactor: Extract MessageDict.finalize_payload().
refactor: Extract MessageDict.finalize_payload().

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