feat: set defaults for `--v2-upgrade-height` #6311

Job	Run time
lint / golangci-lint	2m 45s
lint / yamllint	5s
markdown-linter / markdown-link-check	2m 56s
markdown-linter / markdown-lint	8s
test / test-short	4m 16s
goreleaser / goreleaser-check	1m 41s
test / test	10m 50s
test / test-coverage	5m 23s
test / test-fuzz	5m 51s
test / test-race	7m 38s
lint / hadolint / hadolint	7s
goreleaser / goreleaser	0s
	41m 40s

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