Make "pub run foo" run "pub run foo:foo" rather than "pub run bin/foo"

sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart

Index: sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart b/sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart
index f19780569eb146c9e17582b15834aa22daca9899..5d0d3547b79f0c3f1d46563a7333f046b349111d 100644
--- a/sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart
+++ b/sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart
@@ -294,7 +294,7 @@ main() {
       ])
     ]).create();
 
-    var pub = pubRun(args: ["script"]);
+    var pub = pubRun(args: ["bin/script"]);
     pub.stdout.expect("Modified!");
     pub.shouldExit();
   });
@@ -334,7 +334,7 @@ main() {
       ])
     ]).create();
 
-    var pub = pubRun(args: ["script"]);
+    var pub = pubRun(args: ["bin/script"]);
     pub.stdout.expect("Hello!");
     pub.shouldExit();
   });