bug: panic issue to merge proto files

[SebastianElvis]

Summary

This is a follow-up issue, for the panic issue to merge proto files, we did a temporary fix https://github.com/babylonchain/babylon-private/pull/264 to unblock FP CI.

But disabling those checks is a hacky way and it could easily sneak into the prod. So we need to follow up and find out a better way to fix it.

Ref:

babylon/app/app.go

Lines 559 to 560 in 9fa494b

	// FIXME (https://github.com/babylonlabs-io/babylon-private/issues/266): This is a temporary fix
	protoFiles, _ := proto.MergedRegistry()

Problem Definition

The root cause is that proto.MergedRegistry() tries to get all protobuf descriptors and find their metadata from Cosmso SDK's gogoproto package. The descriptors are stored in a global variable in the google.golang.org/protobuf package. However, libp2p also injects descriptors into this package, and gogoproto cannot find the metadata of these descriptors injected by libp2p. If the program loads libp2p then this error will occur, otherwise it won't. That's why unit tests do not panic but op stack e2e panic.