perf(rsema1d): reduce allocations in merkle proof and RLC computation #14354

Job	Run time
markdown-linter / markdown-link-check	22s
lint / hadolint	14s
markdown-linter / markdown-lint	11s
build / build	1m 59s
build / build-fibre	1m 55s
lint / yamllint	10s
lint / go-mod-tidy-check	46s
lint / golangci-lint-fibre	4m 18s
lint / golangci-lint	4m 13s
test / test-short	3m 31s
test / test-fibre	1m 24s
test / go-test (github.com/celestiaorg/celestia-app/v9/app/test, TestSquareSize.\|TestPriority.)	1m 28s
goreleaser	0s
test / go-test (github.com/celestiaorg/celestia-app/v9/test/txsim)	3m 54s
test / go-test (github.com/celestiaorg/celestia-app/v9/app/test, TestBigBlob.\|TestStandardSDK.)	1m 0s
test / go-test (unit)	3m 26s
test / go-test (github.com/celestiaorg/celestia-app/v9/app/test, TestIntegration.*)	1m 22s
test / go-test (github.com/celestiaorg/celestia-app/v9/fibre/..., fibre)	1m 24s
test / go-test (github.com/celestiaorg/celestia-app/v9/tools/chainbuilder)	1m 25s
test / build-e2e-image	0s
test / go-test (github.com/celestiaorg/celestia-app/v9/pkg/user)	5m 18s
test / go-test (github.com/celestiaorg/celestia-app/v9/test/ledger)	1m 48s
test / test-multiplexer	0s
test / test-docker-e2e	0s
test / test	3s
	40m 11s

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