Meta: Port recent changes to the GN build

3a73eb99acac57e3b87fffcecbcd1fb5e881122e

Meta/gn/secondary/Userland/Libraries/LibJS/BUILD.gn

@@ -33,6 +33,7 @@ shared_library("LibJS") {
     "Bytecode/IdentifierTable.cpp",
     "Bytecode/Instruction.cpp",
     "Bytecode/Interpreter.cpp",
+    "Bytecode/Label.cpp",
     "Bytecode/RegexTable.cpp",
     "Bytecode/StringTable.cpp",
     "Console.cpp",