core: prevent creating a zero identifier with deserialization (#797) #1443

Job	Run time
build with default features	32s
build with no_std (ristretto255)	23s
build with no_std (ed25519)	18s
test on beta	2m 24s
Clippy	59s
build with no_std (p256)	31s
build with no_std (secp256k1)	20s
build with no_std (secp256k1-tr)	21s
build with no_std (rerandomized)	20s
actionlint	6s
build with MSRV (1.66.1)	1m 40s
Check Rust doc	36s
Rustfmt	11s
Check if automatically generated code is up to date	16s
	8m 57s

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