Fix duplicate codec indexes #11824

Job	Run time
preflight / preflight	41s
preflight / ci-versions	57s
cargo-check-all-crate-macos	11m 52s
cargo-check-benches (master)	19m 29s
cargo-check-each-crate (1)	34m 21s
cargo-check-benches (current)	19m 27s
cargo-check-each-crate (2)	31m 31s
cargo-check-each-crate (3)	8m 20s
test-frame-ui	27m 29s
cargo-check-each-crate (4)	27m 59s
test-full-crypto-feature	2m 20s
cargo-check-each-crate (5)	37m 5s
cargo-check-each-crate (6)	14m 1s
test-node-metrics	7m 51s
cargo-check-each-crate (7)	35m 32s
test-frame-examples-compile-to-wasm	2m 58s
check-tracing	2m 8s
test-deterministic-wasm	6m 0s
check-metadata-hash	7m 33s
node-bench-regression-guard	13s
All test misc tests passed	1s
	4h 57m 48s

Provide feedback