Mangler generates duplicated idents if there's `eval`

[CPunisher]

Describe the bug

Mangler generates duplicated idents if there's eval.

The problem disappears if we comment memberValue = eval("");

Input code

var Config = function () {
    if (chart.series) {
        var specialUnit = {
            ids: [],
        };
        var normalUnit = {
            ids: [],
        };
        chart.series.forEach(function (item) {
            var mId = item.split("-")[2];
            specialUnit.ids.push(mId);
            normalUnit.ids.push(mId);
        });
    }
    memberValue = eval("");
}();
console.log(Config);

Config

{
  "jsc": {
    "target": "es2024",
    "parser": {
      "syntax": "typescript",
      "tsx": false
    },
    "transform": {
      "legacyDecorator": false,
      "decoratorVersion": "2022-03"
    },
    "minify": {
      "compress": true,
      "mangle": true,
    },
    "loose": false
    },
  "module": {
    "type": "es6"
  },
  "minify": false,
  "isModule": true,
}

Link to the code that reproduces this issue

https://play.swc.rs/?version=1.15.2&code=H4sIAAAAAAAAA52RvQ7CIBSFd5%2BCMNFEGRxtnIyDD6BL0wHpxZLw0wDtYvru3taftiYu3uGGnHs%2B7iF0IpCDd0rfyJ6o1smkvSMsI%2FcVwdKKMFmLkHiEoCG%2B9aE6RGMDUgtzdjohP81Gtoo7UpTrj9jnC9b5YP9A53G48uEoZM2m5DqBzb6uG7bZU4VrhimPjdGJ0Q3Nim2ZL5yz93AMwZs21gzRbGmbov9y9a9zP3YL9grhIkwLGAI6YRil6OgZNuld9Aa48Tf2%2FAoUH1%2F9jO%2BYAQAA&config=H4sIAAAAAAAAA2WQvQ6DMAyEd54CZW4lRKsOnbt27R4Fg1KRH9lGaoR49yZAKKhbcj5%2FPnssylK8SYl7OcZn%2FLDEDjj%2BBVBd1VdxWnQvkQA3X1QoWJaf5OTggRRqz6s7cSiVWtkTzNK0chilpdah2aN66KQKD1AOJTvMjRusyZUXIGln09AYrj5XF3GgG211G%2FZo5YxHIIoa4%2FBDGmm7Hg5qhvTOEfyHF8Y1w9ySTxXXXg51SylWU06wbSA0PXPnMqyYvsBkYKd4AQAA

SWC Info output

No response

Expected behavior

It should not generate duplicated idents, which makes the program broken

Actual behavior

e and r are duplicated

var Config = function() {
    if (chart.series) {
        var e = [], r = [];
        chart.series.forEach(function(e) {
            var r = e.split("-")[2];
            e.push(r), r.push(r);
        });
    }
    memberValue = eval("");
}();
console.log(Config);

Version

1.15.2

Additional context

No response

[magic-akari]

maybe related: #9791