LibJS/Bytecode: Leave GlobalDeclarationInstantiation in C++

Don't try to implement this AO in bytecode. Instead, the bytecode
Interpreter class now has a run() API with the same inputs as the AST
interpreter. It sets up the necessary environments etc, including
invoking the GlobalDeclarationInstantiation AO.

Userland/Libraries/LibJS/Bytecode/Generator.cpp

@@ -60,7 +60,8 @@ CodeGenerationErrorOr<NonnullOwnPtr<Executable>> Generator::generate(ASTNode con
         .string_table = move(generator.m_string_table),
         .identifier_table = move(generator.m_identifier_table),
         .number_of_registers = generator.m_next_register,
-        .is_strict_mode = is_strict_mode });
+        .is_strict_mode = is_strict_mode,
+    });
 }
 
 void Generator::grow(size_t additional_size)