It has learned what pronouns mean by itself, from the corpus and the RLHF step, it doesn’t need to be specifically prompted. ChatGPT with GPT-3.5 in my experiments did in some special cases need to be explicitly reminded, though, but I doubt that GPT-4 needs that anymore. The bot perfectly understands what I mean with "I", or "we", including whether the "we" is inclusive or exclusive [1] based on context.
