SWC parser returns unevenly escaped windows path in ast

[kwonoj]

Describe the bug

Having a windows path in a variable returns part of path segment have duplicated backslash, output ast is

{
  "type": "Module",
  "span": {
    "start": 0,
    "end": 108
  },
  "body": [
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 0,
        "end": 108
      },
      "ctxt": 0,
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 4,
            "end": 108
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 4,
              "end": 16
            },
            "ctxt": 2,
            "value": "coverageData",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "ObjectExpression",
            "span": {
              "start": 19,
              "end": 108
            },
            "properties": [
              {
                "type": "KeyValueProperty",
                "key": {
                  "type": "Identifier",
                  "span": {
                    "start": 26,
                    "end": 30
                  },
                  "value": "path"
                },
                "value": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 32,
                    "end": 101
                  },
                  "value": "C:\\github\\swc-plugin-coverage-instrument\\spec\\\\util\\verifier.ts",
                  "raw": "\"C:\\\\github\\\\swc-plugin-coverage-instrument\\\\spec\\\\util\\\\verifier.ts\""
                }
              }
            ]
          },
          "definite": false
        }
      ]
    }
  ],
  "interpreter": null
}

the relavant node is

 "value": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 32,
                    "end": 101
                  },
                  "value": "C:\\github\\swc-plugin-coverage-instrument\\spec\\\\util\\verifier.ts",
                  "raw": "\"C:\\\\github\\\\swc-plugin-coverage-instrument\\\\spec\\\\util\\\\verifier.ts\""
                }

in value, there's spec\\\\util while all others are \\.

Input code

var coverageData = {
    path: "C:\\github\\swc-plugin-coverage-instrument\\spec\\util\\verifier.ts",   
}

Config

Default ast parser config in playground

Link to the code that reproduces this issue

https://play.swc.rs/?version=1.14.0&code=H4sIAAAAAAAAAzWMMQqAMAwAd8E%2FhM7WBwhO%2BowsscQa0FraVAfx73bx1uPuogTuvDiR55mUYISnbaASSbcBzDQgetGtLIj5djbuxUuwf2MlZE3l4KDVR3aIRWVHrFpW4dRrNl3dtc37AcmeTbtsAAAA&config=H4sIAAAAAAAAA1WPSw6DMAxE95wCed1tu%2Bgd2PQGVmpQUH6yjQRCvXsDJLTs4pnnmXht2hZGMfBs1%2FzMQ0IW4nPOiixBcc4KkPEohm1SuFWX5uSssfoiiRMb6jDgQJ6C5g3liU5ylC2kRye0S5%2FDAUUeSPd8uZdgcDEKVbxo3gbbL%2F9fM9EnJpEruKEYBkfXuqZUgo%2FvaTfLybokOuof8INq2RkMVrq6uR3WfL4TPVvTPgEAAA%3D%3D

SWC Info output

    Operating System:
        Platform: win32
        Arch: x64
        Machine Type: x86_64
        Version: Windows 11 Pro
        CPU: (8 cores)
            Models: Snapdragon (TM) 8cx Gen 3 @ 3.0 GHz

    Binaries:
        Node: 25.1.0
        npm: 11.6.2
        Yarn: N/A
        pnpm: N/A

    Relevant Packages:
        @swc/core: 1.14.0
        @swc/helpers: N/A
        @swc/types: 0.1.25
        typescript: 5.5.3

    SWC Config:
        output: N/A
        .swcrc path: N/A

    Next.js info:
        output: N/A

Expected behavior

expect "value": "C:\\github\\swc-plugin-coverage-instrument\\spec\\util\\verifier.ts",

Actual behavior

value output have inconsistent backslash

"value": "C:\\github\\swc-plugin-coverage-instrument\\spec\\\\util\\verifier.ts",

Version

1.14.0

Additional context

No response