fix(voice): disable OGG CRC to avoid node-crc native build failure

- prism-media@2.0.0-alpha.0 OggLogicalBitstream requires node-crc
- node-crc is Rust native addon that fails to build (MSRV compat)
- Setting crc: false makes prism-media skip require('node-crc')
- OGG streams work correctly without CRC checksums
- node-crc kept in package.json

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

services/discord-gateway/package.json

@@ -27,6 +27,7 @@
     "ioredis": "^5.11.0",
     "libsodium-wrappers": "^0.8.4",
     "lru-cache": "^11.5.1",
+    "node-crc": "^4.0.0",
     "openai": "^6.38.0",
     "opusscript": "^0.0.8",
     "p-limit": "^7.3.0",