tests: Fix send_message calls in test_events.py.
tests: Fix send_message calls in test_events.py.

We mostly introduce these functions (as part of a big
code sweep):

    send_stream_message
    send_personal_message
    send_huddle_message

In two cases, where we want to specifically manipulate
queue ids, we now call check_send_message directly.  (The
above three functions deliberately don't support kwargs
to ensure simple code and better type safety.)

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