Store the async-await compiled pub code directly in the repo.

sdk/lib/_internal/pub_generated/test/global/activate/doesnt_snapshot_path_executables_test.dart

+import 'package:scheduled_test/scheduled_test.dart';
+import '../../descriptor.dart' as d;
+import '../../test_pub.dart';
+main() {
+  initConfig();
+  integration("doesn't snapshots the executables for a path package", () {
+    d.dir(
+        'foo',
+        [
+            d.libPubspec("foo", "1.0.0"),
+            d.dir(
+                "bin",
+                [d.file("hello.dart", "void main() => print('hello!');")])]).create();
+    schedulePub(
+        args: ["global", "activate", "-spath", "../foo"],
+        output: isNot(contains('Precompiled foo:hello.')));
+    d.dir(
+        cachePath,
+        [
+            d.dir(
+                'global_packages',
+                [
+                    d.dir(
+                        'foo',
+                        [
+                            d.matcherFile('pubspec.lock', contains('1.0.0')),
+                            d.nothing('bin')])])]).validate();
+  });
+}