Runtime compilation: fail if importing from unexpected modules

[vouillon]

No description provided.

[hhugo]

I was thinking about a check that verify that import from known modules have a matching "export".
A typo in the name of an imported function will result in a runtime error that is not even mentioning the problematic name.

Step to reproduce:

• Apply the following diff to obj.wat

 -  (import "effect" "caml_trampoline"
 +  (import "effect" "caml_trampoline23"

• Run some wasm code
  WASM_OF_OCAML=true dune build @compiler/tests-ocaml/runtest-wasm --profile=with-effects

• Errors

Command [47] exited with code 1:
$ (cd _build/default/compiler/tests-ocaml/lib-option && ../../../.bin/node test.bc.wasm.js) > _build/default/compiler/tests-ocaml/lib-option/test.bc.wasm.js.output
node:internal/process/promises:394
    triggerUncaughtException(err, true /* fromPromise */);
    ^

[TypeError: WebAssembly.instantiate(): Import #110 "effect": module is not an object or function]

Node.js v23.10.0

[vouillon]

With this PR, you get the following error message:

The runtime contains unknown imports:
  effect caml_trampoline23

[hhugo]

With this PR, you get the following error message:

The runtime contains unknown imports:
  effect caml_trampoline23

Cool, I was testing with an older commit which didn't exit 2 in case of errors (1c29882)