fix: reject BlobTxs larger than 2 MiB (#4084) #6345

Job	Run time
goreleaser / goreleaser-check	1m 39s
lint / golangci-lint	2m 53s
lint / yamllint	4s
markdown-linter / markdown-lint	6s
markdown-linter / markdown-link-check	2m 30s
test / test	10m 50s
test / test-short	4m 14s
test / test-coverage	5m 17s
test / test-fuzz	5m 42s
test / test-race	7m 42s
lint / hadolint / hadolint	9s
goreleaser / goreleaser	0s
	41m 6s

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