Skip IR deserialization for highly trusted peers

[ssoelvsten]

While looking at the FABRIC paper, I noticed the following:

More importantly, the analysis can often be avoided entirely – when either the worker has compiled the class in the past and retains a cached copy, or the worker trusts the provider of the code to correctly compile it. The implementation currently only leverages the former case.

Troupe could potentially do the same for highly trusted nodes. For example, it could accept the final Javascript rather than the IR.