An untyped delay converts before the timer call and waits in a hidden
local, so the lowered call sits inside a seqExpr. The realTimer mark was
applied to the value lowerTimerCall returned, which that wrapper hid, so
an imported setTimeout or setInterval with an untyped delay emitted the
mock-aware entry point and its callback ran on the mocked queue.
timers-delay-warnings-mocked.ts schedules an imported setTimeout with an
untyped delay while mock.timers is enabled and calls the callback once the
script ends, after the tick; timer-delay-lowering.test.ts pins the
realTimer mark on the call inside the seqExpr.
Chris Tate
fab8af0d5c