Output of `rescript-tools doc` includes shadowed bindings

[mediremi]

If a module has shadowed bindings

let foo = (a: int, b: string) => ()

let foo = () => foo(1, "")

the output of rescript-tools doc will include the shadowed binding

{
  "name": "Foo",
  "docstrings": [],
  "source": {
    "filepath": "js/Foo.res",
    "line": 1,
    "col": 1
  },
  "items": [
  {
    "id": "Foo.foo",
    "kind": "value",
    "name": "foo",
    "signature": "let foo: (int, string) => unit",
    "docstrings": [],
    "source": {
      "filepath": "js/Foo.res",
      "line": 1,
      "col": 5
    },
    "detail": 
    {
      "kind": "signature",
      "details": {
      "parameters": [{
          "path": "int"
        }, {
          "path": "string"
        }],
      "returnType": {
        "path": "unit"
      }
    }
    }
  }, 
  {
    "id": "Foo.foo",
    "kind": "value",
    "name": "foo",
    "signature": "let foo: unit => unit",
    "docstrings": [],
    "source": {
      "filepath": "js/Foo.res",
      "line": 3,
      "col": 5
    },
    "detail": 
    {
      "kind": "signature",
      "details": {
      "parameters": [{
          "path": "unit"
        }],
      "returnType": {
        "path": "unit"
      }
    }
    }
  }]
}

[zth]

Interesting. It just reads the type file as is, so it makes sense. Can't think of a scenario for docs where it makes sense to include the shadowed binding like this though, so maybe it should just be excluded.

[mediremi]

I've made a PR that fixes this by keeping the last value of a given ID: https://github.com/rescript-lang/rescript/pull/7497/files