[cfe] Enable 'getter-setter-error' flag in CFE unit tests

Change-Id: I7f7201a26e1ce1b9ba7afab0cb4e56827de76194
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/397162
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Chloe Stefantsova <cstefantsova@google.com>

https://dart.googlesource.com/sdk/+/d0a22190845dc300a5b4097701189084f74a8c87

DEPS

diff --git a/DEPS b/DEPS
index 627f3c7..2865e21 100644
--- a/DEPS
+++ b/DEPS
@@ -260,7 +260,7 @@
 
   'engine/src/flutter': Var('flutter_git') + '/mirrors/engine' + '@' + '5fe7e07a2e70f51495da7fc6177c416921b0c384',
 
-  'engine/src/flutter/third_party/dart': Var('dart_git') + '/sdk' + '@' + '88dc829f7482116c4b9c883fc6a5edbee150f11f',
+  'engine/src/flutter/third_party/dart': Var('dart_git') + '/sdk' + '@' + 'd0a22190845dc300a5b4097701189084f74a8c87',
 
   'flutter': Var('flutter_git') + '/mirrors/flutter' + '@' + '1e824af6bd217beb0cc201394c9832316b6150da',
 

commits.json

diff --git a/commits.json b/commits.json
index 641ff94..1b81391 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "engine/src/flutter":"5fe7e07a2e70f51495da7fc6177c416921b0c384",
-  "engine/src/flutter/third_party/dart":"88dc829f7482116c4b9c883fc6a5edbee150f11f",
+  "engine/src/flutter/third_party/dart":"d0a22190845dc300a5b4097701189084f74a8c87",
   "flutter":"1e824af6bd217beb0cc201394c9832316b6150da"
 }
\ No newline at end of file