[task scheduler] Fix RBE code for unordered API response
[task scheduler] Fix RBE code for unordered API response

Change-Id: I984d71509d1fd73e70727e33cfb5a1c3b7e5e9c1
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/590928
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot