`standard.lintFiles()` doesn't use `process.cwd()`

## Here's what I did

### Files

- `package.json`

  ```JSON
  {
    "name": "testcase",
    "version": "1.0.0",
    "type": "module",
    "dependencies": {
      "standard": "17.1.0"
    }
  }
  ```

- `index.js`

  ```JavaScript
  import fs from "node:fs/promises";
  import process from "node:process";
  import standard from "standard";

  console.log(await fs.readFile("foo/bar.js", "utf8"));
  console.log(await standard.lintFiles(["foo/bar.js"]));

  process.chdir("foo");
  console.log(await fs.readFile("bar.js", "utf8"));
  console.log(await standard.lintFiles(["bar.js"]));
  ```

- `foo/bar.js`

  ```JavaScript
  var baz = 'qux'
  ```

### Steps

1. `npm install`
2. `node index.js`

## What I expected to happen

```
var baz = 'qux'

[
  {
    filePath: '/home/regseb/testcase/foo/bar.js',
    messages: [ [Object], [Object] ],
    suppressedMessages: [],
    errorCount: 1,
    fatalErrorCount: 0,
    warningCount: 1,
    fixableErrorCount: 0,
    fixableWarningCount: 1,
    source: "var baz = 'qux'\n",
    usedDeprecatedRules: [Getter]
  }
]
var baz = 'qux'


[
  {
    filePath: '/home/regseb/testcase/foo/bar.js',
    messages: [ [Object], [Object] ],
    suppressedMessages: [],
    errorCount: 1,
    fatalErrorCount: 0,
    warningCount: 1,
    fixableErrorCount: 0,
    fixableWarningCount: 1,
    source: "var baz = 'qux'\n",
    usedDeprecatedRules: [Getter]
  }
]
```
## What seems to have happened

```
var baz = 'qux'

[
  {
    filePath: '/home/regseb/testcase/foo/bar.js',
    messages: [ [Object], [Object] ],
    suppressedMessages: [],
    errorCount: 1,
    fatalErrorCount: 0,
    warningCount: 1,
    fixableErrorCount: 0,
    fixableWarningCount: 1,
    source: "var baz = 'qux'\n",
    usedDeprecatedRules: [Getter]
  }
]
var baz = 'qux'

/home/regseb/testcase/node_modules/eslint/lib/cli-engine/file-enumerator.js:320
                    throw new NoFilesFoundError(
                          ^

NoFilesFoundError: No files matching 'bar.js' were found.
    at FileEnumerator.iterateFiles (/home/regseb/testcase/node_modules/eslint/lib/cli-engine/file-enumerator.js:320:27)
    at iterateFiles.next (<anonymous>)
    at CLIEngine.executeOnFiles (/home/regseb/testcase/node_modules/eslint/lib/cli-engine/cli-engine.js:797:48)
    at ESLint.lintFiles (/home/regseb/testcase/node_modules/eslint/lib/eslint/eslint.js:551:23)
    at StandardEngine.lintFiles (/home/regseb/testcase/node_modules/standard-engine/index.js:89:41)
    at file:///home/regseb/testcase/index.js:11:28 {
  messageTemplate: 'file-not-found',
  messageData: { pattern: 'bar.js', globDisabled: false }
}

Node.js v20.10.0
```

Standard doesn't use the current directory. It uses the current directory when importing `"standard"`:

- https://github.com/standard/standard-engine/blob/12c96e5/index.js#L105
- https://github.com/standard/standard-engine/blob/12c96e5/index.js#L36
- https://github.com/standard/standard/blob/d1cc665/index.js#L5

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`standard.lintFiles()` doesn't use `process.cwd()` #1956

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Uh oh!

standard.lintFiles() doesn't use process.cwd() #1956

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`standard.lintFiles()` doesn't use `process.cwd()` #1956