Utilities/lsof: Replace uses of JsonObject::get_deprecated()/get_ptr()

Author: https://github.com/AtkinsSJ
Commit: e8ebbcdbc5
Pull-request: https://github.com/SerenityOS/serenity/pull/16627
Reviewed-by: https://github.com/trflynn89

Userland/Utilities/lsof.cpp

@@ -87,9 +87,9 @@ static Vector<OpenFile> get_open_files_by_pid(pid_t pid)
     json.as_array().for_each([pid, &files](JsonValue const& object) {
         OpenFile open_file;
         open_file.pid = pid;
-        open_file.fd = object.as_object().get_deprecated("fd"sv).to_int();
+        open_file.fd = object.as_object().get_integer<int>("fd"sv).value();
 
-        DeprecatedString name = object.as_object().get_deprecated("absolute_path"sv).to_deprecated_string();
+        DeprecatedString name = object.as_object().get_deprecated_string("absolute_path"sv).value_or({});
         VERIFY(parse_name(name, open_file));
         open_file.full_name = name;