Everywhere: Add sv suffix to strings relying on StringView(char const*)

Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).

No functional changes.

Userland/Libraries/LibJS/Runtime/Object.h

@@ -30,7 +30,7 @@ public:                                            \
     using Base = base_class;                       \
     virtual StringView class_name() const override \
     {                                              \
-        return #class_;                            \
+        return #class_##sv;                        \
     }
 
 struct PrivateElement {