fix(daemon): construct test output channels via output_channel()

[Greg Lamberson (glamberson)]

cargo check -p ironrdp-daemon --tests currently fails on bare master with two
E0308 errors at daemon.rs:2239 and :2276: expected OutputEventReceiver, found tokio::sync::mpsc::Receiver<_>.

connection_failure_status_preserves_gateway_error_sources and
terminated_error_status_preserves_session_error_sources (added by #1822,
merged after #1815 changed consume_output's parameter type) construct
output_rx via the pre-#1815 mpsc::channel(1) pattern. Every other call site
in this file, five of them, already uses #1815's output_channel(1)
constructor; these two were missed. Swaps both to match.

No behavior change: output_channel(1) still yields an
(OutputEventSender, OutputEventReceiver) pair consumed identically by both
tests, both of which construct a MustDeliver-classified event
(ConnectionFailure, Terminated), unaffected by the drop-policy routing
#1815 introduced.

[Greg Lamberson (glamberson)]

Superseded by #1827, which includes this exact fix (same two-line change, mpsc::channel(1) to output_channel(1) at both call sites) as part of its larger scope. Closing in favor of that one.