Attempting to close channel that does not have option_shutdown_anysegwit enabled fails, becomes uncloseable

[leocape]

Issue and Steps to Reproduce

Attempting to close a channel with an np2wkh address fails if the peer does not have option_shutdown_anysegwit enabled. Attempting to close again, this time using a p2wkh address fails as the previous shutdown script is now locked into the channel.

There is no way to proceed from here, except for force close, and potential loss.

This should not be a use case - if the peer does not have option_shutdown_anysegwit enabled, then when attempting to close the channel with np2wkh address the request should be rejected - the shutdown script should not be added to the channel, rendering the channel unclose-able.

lightning-cli close id=123xxx destination=39xxx (np2wkh address)

{
"code": -32602,
"message": "Invalid close destination"
}

lightning-cli close id=123xxx destination=1bcxxx (p2wkh address)

{
"code": -32602,
"message": "Destination address abc123 does not match previous shutdown script def123"
}

lightning-cli close id=123xxx (no destination specified)

{
"code": -32602,
"message": "Invalid close destination"
}