It's accidental, because other characters are also displayed: https://duckduckgo.com/?q=u20aa
None of these will be shown, but ddg will recognise them as control characters though. https://www.compart.com/en/unicode/category/Cc
What? After opening the source, ctrl-f "representation" selects the reversed word. The source view just happens to interpret the RTL override.
document.querySelector(".zci__body").textContent.charCodeAt(0)
document.querySelector(".zci__body").textContent.substring(1)