Revert "Roll Fuchsia SDK from 889950275648 to 889942972119"

This reverts commit 63bc6538.

Reason for revert: Still breaks UDPSocketTest.
See https://bugs.chromium.org/p/chromium/issues/detail?id=1014916 for context.

Original change's description:
> Roll Fuchsia SDK from 889950275648 to 889942972119
> 
> If this roll has caused a breakage, revert this CL and stop the roller
> using the controls here:
> https://autoroll.skia.org/r/fuchsia-sdk-chromium-autoroll
> Please CC cr-fuchsia+bot@chromium.org on the revert to ensure that a human
> is aware of the problem.
> 
> To report a problem with the AutoRoller itself, please file a bug:
> https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug
> 
> Documentation for the AutoRoller is here:
> https://skia.googlesource.com/buildbot/+/master/autoroll/README.md
> 
> CQ_INCLUDE_TRYBOTS=luci.chromium.try:fuchsia-arm64-cast;luci.chromium.try:fuchsia-x64-cast
> TBR=cr-fuchsia+bot@chromium.org
> 
> Change-Id: Id87590c9ae2e3dddf858cfb5886ce359245409a6
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1865033
> Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
> Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/master@{#706544}

TBR=chromium-autoroll@skia-public.iam.gserviceaccount.com,cr-fuchsia+bot@chromium.org

Change-Id: Iac0b3d0ceabe372b443d8a1897726073243051f7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Cq-Include-Trybots: luci.chromium.try:fuchsia-arm64-cast;luci.chromium.try:fuchsia-x64-cast
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1865544Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706602}

build/fuchsia/linux.sdk.sha1

-8899429721196317136
+8899502756487089920
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-8899434025398286080
+8899505638123521760
\ No newline at end of file