[vm/wasm] Make HashMap<K, V> use non-generic _HashMapEntry object

TEST=ci

Change-Id: Ifef2ef8859a037cd2830182520e6d19cb9b2281e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/357142
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>

https://dart.googlesource.com/sdk/+/bca5e833cb6e2cbdd2e51dab97094280423e0859

DEPS

diff --git a/DEPS b/DEPS
index a4b9d82..d41c2e3 100644
--- a/DEPS
+++ b/DEPS
@@ -288,7 +288,7 @@
 
   'engine/src/flutter': Var('flutter_git') + '/mirrors/engine' + '@' + 'e5bdce4eef270698035177ed76c74b62a4790e44',
 
-  'engine/src/third_party/dart': Var('dart_git') + '/sdk' + '@' + '0a68ca97b9636f0f99d8699fb628d3eba7ba41a6',
+  'engine/src/third_party/dart': Var('dart_git') + '/sdk' + '@' + 'bca5e833cb6e2cbdd2e51dab97094280423e0859',
 
   'flutter': Var('flutter_git') + '/mirrors/flutter' + '@' + '1ca88730a0c13968e7923f1562e44792dae18ea2',
 

commits.json

diff --git a/commits.json b/commits.json
index 94c4022..7b2a632 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "engine/src/flutter":"e5bdce4eef270698035177ed76c74b62a4790e44",
-  "engine/src/third_party/dart":"0a68ca97b9636f0f99d8699fb628d3eba7ba41a6",
+  "engine/src/third_party/dart":"bca5e833cb6e2cbdd2e51dab97094280423e0859",
   "flutter":"1ca88730a0c13968e7923f1562e44792dae18ea2"
 }
\ No newline at end of file