Skip pkg tests in Dart product/precompiled modes as the test framework uses

pkg/pkg.status

Index: pkg/pkg.status
diff --git a/pkg/pkg.status b/pkg/pkg.status
index ef18a9b38b8f2367e1da6cd4ae60f604c431099a..83c6a8d2cc6acc4a2b5f2dd5b5d557c5bc61df76 100644
--- a/pkg/pkg.status
+++ b/pkg/pkg.status
@@ -214,3 +214,6 @@ analyzer/test/src/task/model_test: Crash # Issue 24485
 analyzer/test/src/task/strong/checker_test: Crash # t: Failed assertion: line 88 pos 12: '!variable2index.containsKey(element)' is not true.
 analyzer/test/src/task/strong/inferred_type_test: Crash # t: Failed assertion: line 88 pos 12: '!variable2index.containsKey(element)' is not true.
 analyzer/test/src/task/strong_mode_test: Crash # Issue 24485
+
+[ $noopt || $runtime == dart_precompiled || $runtime == dart_product ]
+*: SkipByDesign # The pkg test framework imports dart:mirrors.