fixes for iris/iris!886 and iris/iris!896

coq-lambda-rust.opam

theories/typing/fixpoint.v

theories/typing/function.v

theories/typing/lib/arc.v

theories/typing/lib/ghostcell.v

theories/typing/lib/mutex/mutex.v

theories/typing/lib/mutex/mutexguard.v

theories/typing/lib/rc/rc.v

theories/typing/lib/rc/weak.v

theories/typing/lib/refcell/refcell.v

theories/typing/lib/rwlock/rwlock.v

theories/typing/lib/rwlock/rwlockreadguard.v

theories/typing/lib/rwlock/rwlockwriteguard.v

theories/typing/lib/spawn.v

theories/typing/shr_bor.v

theories/typing/sum.v

theories/typing/type.v