QUIC APL: Fix incoming default stream popping #1149

Job	Run time
run-checker (no-cmp)	8m 10s
run-checker (no-cms)	7m 18s
run-checker (no-dgram)	7m 38s
run-checker (no-dh)	7m 12s
run-checker (no-dtls)	9m 35s
run-checker (no-ec)	6m 39s
run-checker (no-ec2m)	7m 52s
run-checker (no-ecx)	7m 12s
run-checker (no-http)	7m 26s
run-checker (no-legacy)	7m 30s
run-checker (no-sock)	9m 31s
run-checker (enable-ssl-trace)	9m 59s
run-checker (no-threads)	7m 33s
run-checker (no-thread-pool)	7m 20s
run-checker (no-default-thread-pool)	7m 25s
run-checker (no-tls)	9m 27s
run-checker (no-tls1_2)	7m 36s
run-checker (no-tls1_3)	6m 43s
run-checker (enable-trace enable-fips)	7m 59s
run-checker (no-ui)	7m 41s
run-checker (no-quic)	7m 9s
	2h 44m 55s

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