skiaserve: Fix /cmd/N and /cmd/N[0|1], the response was never queued.
skiaserve: Fix /cmd/N and /cmd/N[0|1], the response was never queued.

BUG=skia:
R=joshualitt@google.com, ethannicholas@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1686553006

Review URL: https://codereview.chromium.org/1686553006

qrealka/skia-hc,qrealka/skia-hc,aosp-mirror/platform_external_skia,tmpvar/skia.cc,google/skia,rubenvb/skia,tmpvar/skia.cc,HalCanary/skia-hc,google/skia,rubenvb/skia,HalCanary/skia-hc,HalCanary/skia-hc,qrealka/skia-hc,google/skia,google/skia,qrealka/skia-hc,qrealka/skia-hc,google/skia,google/skia,HalCanary/skia-hc,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,qrealka/skia-hc,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,google/skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,aosp-mirror/platform_external_skia,rubenvb/skia,aosp-mirror/platform_external_skia,qrealka/skia-hc,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,rubenvb/skia,google/skia,qrealka/skia-hc,tmpvar/skia.cc,aosp-mirror/platform_external_skia,rubenvb/skia,aosp-mirror/platform_external_skia,tmpvar/skia.cc,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,rubenvb/skia,rubenvb/skia,google/skia,rubenvb/skia,HalCanary/skia-hc,rubenvb/skia,tmpvar/skia.cc,aosp-mirror/platform_external_skia,google/skia,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia