(proof-new) Update add lazy step interface in LazyCDProof (#5299)

(proof-new) Update add lazy step interface in LazyCDProof (#5299)

Ensuring closed proofs should not be enabled by default, it is actually not used very often as a whole. Moreover, the "trust id" argument is the most useful argument and hence should come as the 3rd argument. This updates all uses of addLazyStep for the change in interface, also changes term conversion generator which had a similar issue with default arguments.

Notice that some calls to addLazyStep were checking closed but without providing a debug string, these I've left alone (they no longer check closed).