fix(ci): preload IBC realms in mod-download instead of disabling lazy loader

The previous `-lazy-loader=false` fix caused `no signatures error` and
`invalid package` errors. Using `-paths` with our IBC realms transitively
loads all required package dependencies before `gno mod download` runs,
avoiding the 502 errors from concurrent lazy loads.

Author: tbruyelle

Makefile

@@ -27,7 +27,7 @@ test:
 mod-download:
 	go tool gnodev -empty-blocks -resolver root=. \
 		-resolver root=$(shell go tool gno env GNOROOT)/examples \
-		-lazy-loader=false & \
+		-paths "gno.land/r/aib/ibc/core,gno.land/r/aib/ibc/apps/transfer,gno.land/r/aib/ibc/apps/testing/grc20test" & \
 	while ! curl -s http://127.0.0.1:26657/status > /dev/null 2>&1; do sleep 1; done; \
 	go tool gno clean -modcache=true; \
 	go tool gno mod download -remote-overrides gno.land=http://127.0.0.1:26657