fix(nodebuilder/p2p): fix autonat == nil panic in test #10496

Job	Run time
setup	2s
yamllint	6s
Markdown Lint	8s
hadolint / hadolint	10s
go-ci / Setup	2s
upload-docs	0s
goreleaser	0s
go-ci / Lint	2m 40s
go-ci / Lint Imports	10s
go-ci / Unit Tests Coverage (ubuntu-latest)	6m 5s
go-ci / Go Mod Tidy Check	31s
go-ci / Unit Tests Coverage (macos-14)	4m 29s
go-ci / Integration Tests / Integration Tests Fraud	2m 37s
go-ci / Integration Tests / Da Tests Sync	3m 7s
go-ci / Integration Tests / Integration Tests Blob	2m 51s
go-ci / Integration Tests / Integration Tests ND	2m 52s
go-ci / Integration Tests / Integration Tests p2p	3m 2s
go-ci / Integration Tests / Integration Tests API	3m 33s
go-ci / Integration Tests / Integration Tests Sync	13m 7s
go-ci / Integration Tests / Integration Tests Pruning	3m 26s
go-ci / Integration Tests / Integration Tests Reconstruction	2m 40s
go-ci / Integration Tests / Integration Tests Share	2m 50s
	54m 28s

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