feat(pack): enable Distant Horizons by default

The server generates and serves DH LODs, but DH was opted out by default,
so clients never received them. Default it on (still optional/opt-out) so
players get server-side distant terrain out of the box.

index.toml

@@ -216,7 +216,7 @@ metafile = true
 
 [[files]]
 file = "mods/distanthorizons.pw.toml"
-hash = "7fd6d5b01ee6f20585b0a0b704f54c9f05772381bdbcbde30538452514774eb9"
+hash = "afed8a03fd6b410c6af339b55a026dc8e77b5b79c6ab0b8c270157fb0d8a2729"
 metafile = true
 
 [[files]]