Roll SwiftShader from 00b601d8ad24 to e1b8cbd9702b (2 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/00b601d8ad24..e1b8cbd9702b

2022-10-18 capn@google.com Move Reactor code emission from SpirvShader to EmitState
2022-10-18 capn@google.com Detect OpImageWrite in the analysis pass

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-dawn-autoroll
Please CC lokokung@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in SwiftShader: https://bugs.chromium.org/p/swiftshader/issues/entry
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

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/+doc/main/autoroll/README.md

Bug: None
Tbr: lokokung@google.com
Change-Id: I9688fbf12f7c74ed15e101cc0651dec2cd8a35e0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106361
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -137,7 +137,7 @@ deps = {
   },
 
   'third_party/swiftshader': {
-    'url': '{swiftshader_git}/SwiftShader@00b601d8ad244776d1b7b64d0d52cdf6750a9ece',
+    'url': '{swiftshader_git}/SwiftShader@e1b8cbd9702b3cb55c70eb28104d35b538c54a21',
     'condition': 'dawn_standalone',
   },