[serializer] ensure that immortal immovable roots are correctly deserialized.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index aff7f48513a26e01cbc513fe9bc70ad2c106154d..32120df9e304e31a6115dc507180a9ccd12248de 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -1727,8 +1727,8 @@ Handle<SharedFunctionInfo> Compiler::GetSharedFunctionInfo(
     // On the first compile, there are no existing shared function info for
     // inner functions yet, so do not try to find them. All bets are off for
     // live edit though.
-    DCHECK(script->FindSharedFunctionInfo(literal).is_null() ||
-           isolate->debug()->live_edit_enabled());
+    SLOW_DCHECK(script->FindSharedFunctionInfo(literal).is_null() ||
+                isolate->debug()->live_edit_enabled());
   } else {
     maybe_existing = script->FindSharedFunctionInfo(literal);
   }