[Fuchsia] Add SessionAudioConsumerFactory in tests-with-exec.cmx

crrev.com/722312 added the service to most .cmx files, but missed
tests-with-exec.cmx .

Bug: 1027048
Change-Id: Ic5a0dd85ea5b7b0c483f9466006f5d7ec6983fd9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1956004
Auto-Submit: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: David Dorwin <ddorwin@chromium.org>
Commit-Queue: David Dorwin <ddorwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#722635}

build/config/fuchsia/tests-with-exec.cmx

@@ -19,6 +19,7 @@
       "fuchsia.logger.Log",
       "fuchsia.logger.LogSink",
       "fuchsia.media.Audio",
+      "fuchsia.media.SessionAudioConsumerFactory",
       "fuchsia.media.drm.Widevine",
       "fuchsia.mediacodec.CodecFactory",
       "fuchsia.net.NameLookup",