hotkeys: Refactor text selectors to be array.
hotkeys: Refactor text selectors to be array.

This makes it easier in the future to see diffs and to add/remove text
selectors for hotkey prevention.

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