feat(the-order): log each idol hit for the website log parser

[ChronoFinale]

Re-lands the idol roll logging on dev.

#511 merged this into main, but dev never had it — and #518 (v0.5.3), cut
from dev, then overwrote compatibility/TheOrder.lua and stripped it back
out. So the change is currently in no shipping branch: main's copy was
removed by the release, and dev never carried it.

Same commit, cherry-picked onto dev. One file, +22 lines, no behaviour change
beyond the log line.

What it does

Under The Order the idol card is a weighted lottery over your deck — each card's
chance scales with how many copies you hold — but the roll happens at the start
of a blind and then vanishes. This logs it so the website log parser can show
the distribution the roll was made against.

IDOL_ROLL::<base64 of {"roll":0.62,"winner":"QH","cards":["KS4","QH3","AS1"]}>

Cards are <rank><suit><count> tokens in selection order (T = 10), base64'd so
the line stays a single token in the log. The website side is
Balatro-Multiplayer/www#55.

Notes

• Sits inside the existing raw_random < threshold branch, right after the
  winner is assigned and before the break, so it fires exactly once per roll
  and only when a winner was actually picked.
• valid_idol_cards order is preserved, which is what lets the parser walk
  cumulative thresholds and land the roll in the winning slice.
• Verified emitting on a local 0.5.2 install: a full 52-card deck roll logged
  {"roll":0.456…,"winner":"9D","cards":["AS1",…,"2D1"]}, winner present in
  cards.