fix(linter): convert parser options to flat config even is parser is missing

[meeroslav]

When converting to flat config and parser is missing, the parserOptions would be left unparsed which then lead to a runtime error. This PR ensures parserOptions are properly handled on their own.

Current Behavior

Expected Behavior

Related Issue(s)

Fixes #

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1 Ignored Deployment

Name	Status	Preview	Updated (UTC)
nx-dev	⬜️ Ignored (Inspect)	Visit Preview	Mar 19, 2024 11:34am

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✅ Successfully ran 6 targets

• nx affected --target=e2e --base=f36e0380100ffb1a5ddb1b9495b32606243f888a --head=76d553f4aa1edc632e749770b3a7e66270a35f2f --parallel=1
• nx affected --targets=lint,test,build --base=f36e0380100ffb1a5ddb1b9495b32606243f888a --head=76d553f4aa1edc632e749770b3a7e66270a35f2f --parallel=3
• nx run-many -t check-imports check-commit check-lock-files check-codeowners documentation --parallel=1 --no-dte
• nx-cloud record -- nx format:check --base=f36e0380100ffb1a5ddb1b9495b32606243f888a --head=76d553f4aa1edc632e749770b3a7e66270a35f2f
• nx documentation --no-dte
• nx affected -t e2e-macos --parallel=1 --base=f36e0380100ffb1a5ddb1b9495b32606243f888a --head=76d553f4aa1edc632e749770b3a7e66270a35f2f

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[PaulACoroneos]

Thanks for the quick turnaround on this.

[github-actions]

This pull request has already been merged/closed. If you experience issues related to these changes, please open a new issue referencing this pull request.