Lint Gjs/Gts warning only disappears after adding `ember-eslint-parser` as a dev dependency

I've been trying to get rid of the warning:
```
[lint:js] To lint Gjs/Gts files please follow the setup guide at https://github.com/ember-cli/eslint-plugin-ember#gtsgjs
[lint:js] Note that this error can also happen if you have multiple versions of eslint-plugin-ember in your node_modules
```

I have this bit in my eslintrc overrides
```js
{
files: ['**/*.gjs'],
parser: 'ember-eslint-parser',
plugins: ['ember'],
extends: [
'eslint:recommended',
'plugin:ember/recommended',
'plugin:ember/recommended-gjs',
],
}
```

My first step was to make sure there weren't multiple copies of `eslint-plugin-ember` installed. I used `pnpm why -r eslint-plugin-ember`. There was only one installed, the monorepo workspaces all referenced the same `eslint-plugin-ember`. I double-checked this by checking `node_modules/.pnpm/store`.

I was starting to wonder if it was even being loaded at all. In my eslint config changing `parser: 'ember-eslint-parser'` to `parser: 'ember-eslint-parser-asdf'` caused an error, so it was at least looking for the package. The next step I did was go to the source of `ember-eslint-parser` in my `node_modules` and modify directly the `gjs-gts-parser.js`file:

```js
parseForESLint(code, options) {
throw new Error("Error thrown from `parseForESLint`");
patchTs();
/* ... */
}
```

Since this is the entry point for eslint to use for the parser I thought this would fail, but when I ran my `pnpm lint` I still received the "To lint Gjs/Gts files please follow the setup guide..." warning, and did not see the error being thrown.

After adding `ember-eslint-parser` with `pnpm add --save-dev ember-eslint-parser` and then re-running `pnpm lint`, I got:
```
0:0 error Parsing error: Error thrown from `parseForESLint`
```
So the `throw` I hacked into the `ember-eslint-parser` source was finally showing up. I removed my modification, and re-ran `pnpm lint` and no warnings or errors related to "To lint Gjs/Gts files please follow the setup guide" show up, neither via `pnpm lint` or in vscode.

I know this isn't the correct setup since `ember-eslint-parser` is a dependency of `eslint-plugin-ember` but I don't know why else this worked. Any ideas what's wrong in my setup?