[Instantiate] Adds the called function to typing function

src/plugins/instantiate/Instantiate.mli

src/plugins/instantiate/instantiator_builder.ml

src/plugins/instantiate/instantiator_builder.mli

src/plugins/instantiate/stdlib/calloc.ml

src/plugins/instantiate/stdlib/free.ml

src/plugins/instantiate/stdlib/malloc.ml

src/plugins/instantiate/string/mem_utils.ml

src/plugins/instantiate/string/mem_utils.mli

src/plugins/instantiate/string/memset.ml

...stantiate/tests/api/external_instantiator_registration.ml

src/plugins/instantiate/transform.ml