fix(nuxt): respect factory fetch/baseURL options in server useFetch

[danielroe]

🔗 Linked issue

resolves #34996

📚 Description

previously, we only checked opts in this branch, not the merged fetchOptions

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[cernymatej]

the lock file change made by autofix is probably not desired?

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commit: eea83e0

[codspeed-hq]

Merging this PR will not alter performance

✅ 20 untouched benchmarks
⏩ 3 skipped benchmarks¹

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_{Comparing fix/ssr-custom-fetch-baseurl (eea83e0) with 4.x (816c254)}

Footnotes

1. 3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩