fix ShadowDOM on browsers with non-native template

pkg/shadow_dom/lib/shadow_dom.min.js

Index: pkg/shadow_dom/lib/shadow_dom.min.js
diff --git a/pkg/shadow_dom/lib/shadow_dom.min.js b/pkg/shadow_dom/lib/shadow_dom.min.js
index b380191b17303d18da135037431368b54a5bd207..dcdb806662fbccffecc383260bcb2c7e64de25b9 100644
--- a/pkg/shadow_dom/lib/shadow_dom.min.js
+++ b/pkg/shadow_dom/lib/shadow_dom.min.js
@@ -1,2 +1,2 @@
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