Disable type erasure during strong mode tests.

pkg/front_end/testcases/inference/block_bodied_lambdas_basic.dart.strong.expect

Index: pkg/front_end/testcases/inference/block_bodied_lambdas_basic.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference/block_bodied_lambdas_basic.dart.strong.expect b/pkg/front_end/testcases/inference/block_bodied_lambdas_basic.dart.strong.expect
new file mode 100644
index 0000000000000000000000000000000000000000..e5bcf8fbbaa6e5047942217c70daf753fed22810
--- /dev/null
+++ b/pkg/front_end/testcases/inference/block_bodied_lambdas_basic.dart.strong.expect
@@ -0,0 +1,12 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+static method test1() → dynamic {
+  core::List<core::int> o;
+  core::Iterable<core::int> y = o.{core::Iterable::map}<core::int>((core::int x) → core::int {
+    return x.{core::num::+}(1);
+  });
+  core::Iterable<core::int> z = y;
+}
+static method main() → dynamic {}