catala/tests/test_typing/bad/err3.catala_en

> Include: common.catala_en

```catala
scope S:
  definition z equals [
    Structure { -- i: 3 -- e: Int content x };
    Structure { -- i: 4 -- e: y };
    Structure { -- i: 5 -- e: Dat content |1970-01-01| }
  ]
  definition a equals number of (z ++ z) * 2
```

```catala-test-inline
$ catala Typecheck
[WARNING] The constructor "Dec" of enumeration "Enum" is never used; maybe it's unnecessary?

┌─⯈ tests/test_typing/bad/common.catala_en:4.6-4.9:
└─┐
4 │   -- Dec content decimal
  │      ‾‾‾

[ERROR] Error during typechecking, incompatible types:
--> integer
--> decimal

Error coming from typechecking the following expression:
┌─⯈ tests/test_typing/bad/err3.catala_en:10.42-10.43:
└──┐
10 │   definition a equals number of (z ++ z) * 2
   │                                          ‾


Type integer coming from expression:
┌─⯈ tests/test_typing/bad/err3.catala_en:10.42-10.43:
└──┐
10 │   definition a equals number of (z ++ z) * 2
   │                                          ‾


Type decimal coming from expression:
┌─⯈ tests/test_typing/bad/common.catala_en:15.20-15.27:
└──┐
15 │   output a content decimal
   │                    ‾‾‾‾‾‾‾

#return code 255#
```

Re-putting the same check again, to ensure that the `Typecheck` and `ocaml` subcommands output the same type error consistently (bug pointed out and fixed in 498429e).

```catala-test-inline
$ catala ocaml
[WARNING] The constructor "Dec" of enumeration "Enum" is never used; maybe it's unnecessary?

┌─⯈ tests/test_typing/bad/common.catala_en:4.6-4.9:
└─┐
4 │   -- Dec content decimal
  │      ‾‾‾

[ERROR] Error during typechecking, incompatible types:
--> integer
--> decimal

Error coming from typechecking the following expression:
┌─⯈ tests/test_typing/bad/err3.catala_en:10.42-10.43:
└──┐
10 │   definition a equals number of (z ++ z) * 2
   │                                          ‾


Type integer coming from expression:
┌─⯈ tests/test_typing/bad/err3.catala_en:10.42-10.43:
└──┐
10 │   definition a equals number of (z ++ z) * 2
   │                                          ‾


Type decimal coming from expression:
┌─⯈ tests/test_typing/bad/common.catala_en:15.20-15.27:
└──┐
15 │   output a content decimal
   │                    ‾‾‾‾‾‾‾

#return code 255#
```