Another definition of gay

How many people here know that “gay” means happy, bright, merry? Not that I’m a homophobic, but just wanted to see as I’ve seen some comments online on a nursery rhyme that has the word “gay” in it and people just instantly go “Yes for the LGBTQ+ community” when it has nothing to do with that 😅 My daughter is learning at her nursery as well, it’s all 5 little leaves, and it goes “5 little leaves so bright and gay…” In the UK, the word is still used in place for “happy”, it’s not that commonly used anymore but there are people that do use it. So just wondering if everyone is also teaching their kids another definition to the word “gay” to sort raise more positivity around the term as well. If someone is gay it just means they’re happy 😀 (not to use it interchangeably but you know what I mean, hopefully 😆)