[Interpreter] Avoid accessing on-heap literal in VisitLiteral.

test/cctest/interpreter/test-bytecode-generator.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <fstream>
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-array-iterator.h"
@@ skipping 159 matching lines @@
 
       "return 0;\n",
 
       "return +1;\n",
 
       "return -1;\n",
 
       "return +127;\n",
 
       "return -128;\n",
+
+      "return 2.0;\n",
   };
 
   CHECK(CompareTexts(BuildActual(printer, snippets),
                      LoadGolden("PrimitiveReturnStatements.golden")));
 }
 
 TEST(PrimitiveExpressions) {
   InitializedIgnitionHandleScope scope;
   BytecodeExpectationsPrinter printer(CcTest::isolate(),
                                       ConstantPoolType::kNumber);
@@ skipping 2054 matching lines @@
 
   CHECK(CompareTexts(BuildActual(printer, snippets),
                      LoadGolden("Generators.golden")));
 
   FLAG_ignition_generators = old_flag;
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8