fix(allow-block-list-token): ignore generated IDL in root prettier check

The root `pnpm run check` script runs prettier from the repo root, which
only reads the root .prettierignore, not the app-level one - so the
app-level ignore added for idl/abl_token.json (a raw copy of the anchor
build output, regenerated on every `pnpm run generate-client`) had no
effect on CI's root-level check. Mirrors the existing
games/gacha/pinocchio/idl/ entry.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: Harsh-H-Shah

.prettierignore

@@ -5,3 +5,4 @@ Cargo.lock
 games/world-cup/
 games/gacha/pinocchio/idl/
 tokens/token-2022/transfer-hook/block-list/pinocchio/sdk/
+tokens/token-2022/transfer-hook/allow-block-list-token/idl/