Valid public key check in transaction output

Valid public key check in transaction output

Let's say I build a P2MS output script using uncompressed public keys, and let's say too that these public keys are not valid, i.e. they do not represent a valid EC Point and they don't start with 0x04. Will this transaction be broadcasted and included in a block or, among all the validity and standardness checks, a peer also controls that public keys are valid and rejects the transaction if they aren't ? Thank you very much !

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