eslint config requires "requireConfigFile: false"

### Runtime

node.js

### Runtime version

22.12.0

### Module version

26.0.0

### Used with

_No response_

### Any other relevant information

After upgrading to eslint 9 and lab 26, coverage failed with:

```
Cannot read properties of undefined (reading 'includes')
TypeError: Cannot read properties of undefined (reading 'includes')
at validateResolvedConfig (/project/node_modules/@babel/eslint-parser/lib/worker/configuration.cjs:53:37)
at Object.normalizeBabelParseConfigSync (/project/node_modules/@babel/eslint-parser/lib/worker/configuration.cjs:88:10)
at Function.handleMessage (/project/node_modules/@babel/eslint-parser/lib/worker/handle-message.cjs:26:48)
at LocalClient. (/project/node_modules/@babel/eslint-parser/lib/client.cjs:98:79)
at LocalClient.maybeParse (/project/node_modules/@babel/eslint-parser/lib/client.cjs:52:47)
at parse (/project/node_modules/@babel/eslint-parser/lib/parse.cjs:28:14)
at Object.parse (/project/node_modules/@babel/eslint-parser/lib/index.cjs:19:10)
at Object.internals.instrument (/project/node_modules/@hapi/lab/lib/modules/coverage.js:326:31)
at Object.require.extensions. [as .ts] (/project/node_modules/@hapi/lab/lib/modules/coverage.js:116:59)
```

Which is resolved by adding `requireConfigFile` to the eslint config:

```
languageOptions: {
parser: tseslint.parser,
parserOptions: { requireConfigFile: false },
},
```

I am using `eslint.config.mjs` in case that matters.

Was this expected? Is there a better solution? Should this be added to lab itself?

Thanks!