typeinfer: Enqueue CIs for `ccallable` entrypoints (#57158)
This is another step in the long-term direction to have type-inference
fully-explore the code graph we want to emit, largely side-stepping the
vestigial `jl_type_infer` paths that we still have in type-inference for
ccallable (and OpaqueClosure)
This is needed for `juliac`, since the trim checks in codegen check if
code was enqueued in the workqueue as expected.
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Co-authored-by: Jameson Nash <vtjnash@gmail.com>
