ovault - standardize event emitted during entry of failed state in lzCompose

[shankars99]

    event DecodeFailed(bytes32 indexed guid, address indexed oft, bytes message); // 0xbc772e67
    event SendFailed(bytes32 indexed guid, address indexed oft, bytes errMsg); // 0x5feca73a
    event OVaultError(bytes32 indexed guid, address indexed oft, bytes errMsg); // 0xc8a2d9e0
    event NoPeer(bytes32 indexed guid, address indexed oft, uint32 dstEid); // 0x60e5ac46
    event FailedToSendEther(address indexed receiver, uint256 amount, bytes errMsg); // 0xb7da4a55

    event lzComposeInFailedState(bytes4 indexed failEventSelector, bytes errMsg) // 0x6875e033

emitting lzComposeInFailedState(bytes4,bytes)

where bytes4 part is the event signature and bytes is whatever is received from the external call as part of the try..catch