implement additional validation for tendermint pubkey only activation

[borngraced]

KDF panics during a swap when tendermint is activated using pubkey only activation with a 32-byte Ed25519 public key. This issue arises because the maker_coin_htlc_pubkey and taker_coin_htlc_pubkey requires a SECP256k1, which is a 33-byte public key.

komodo-defi-framework/mm2src/mm2_main/src/lp_swap/maker_swap.rs

Lines 544 to 545 in d9d1229

	let maker_coin_htlc_pubkey = self.maker_coin.derive_htlc_pubkey(&unique_data);
	let taker_coin_htlc_pubkey = self.taker_coin.derive_htlc_pubkey(&unique_data);

komodo-defi-framework/mm2src/mm2_main/src/lp_swap/taker_swap.rs

Lines 1078 to 1079 in d9d1229

	let maker_coin_htlc_pubkey = self.maker_coin.derive_htlc_pubkey(&unique_data);
	let taker_coin_htlc_pubkey = self.taker_coin.derive_htlc_pubkey(&unique_data);

sample activation pubkey

"with_pubkey": {
  "type": "ed25519",
  "value": [69, 185, 115, 48, 238, 34, 179, 146, 245, 133, 156, 250, 194, 142, 36, 61, 186, 109, 204, 236, 174, 123, 162, 211, 147, 143, 165, 62, 16, 245, 21, 25]
}