Happy_* (holiday/celebration) implications

BUR #55700 has been rejected.

create implication happy_new_year -> new_year
create implication happy_valentine -> valentine
create implication happy_white_day -> white_day
create implication happy_easter -> easter
create implication happy_halloween -> halloween
create implication merry_christmas -> christmas
create implication happy_birthday -> birthday
create implication happy_anniversary -> anniversary

Having the text of a holiday/celebration obviously means the image is about said holiday/celebration.

Related: topic #25231, topic #20198 (merry christmas -> christmas only)

Basically, even though a picture may have the well wishes written on it, it might not necessarily encapsulate the mood of the holiday it's referencing.

Take post #10888556 for example, even though it has Merry Christmas written on it in both English and Japanese, the post does not have anything at all that resembles Christmas.

The only ones I feel could be reasonable are the birthday and anniversary ones, since they're not really holidays with specific traditions associated with them, and are more commonly celebrating a character or copyright-related day.

The others, as mentioned above, don't necessarily feature traditions or iconography of the holiday just because they have a greeting written on them, it can also just be because that's when the artwork was made, so the artist leaves a holiday greeting for their followers.

I'm sure there's at least one happy_birthday post where the joke is that it isn't actually the character's birthday.

The bulk update request #55700 (forum #421499) has been rejected by @Hillside_Moose.