feat(nuxt): refresh override for data fetching composables

[danielroe]

🔗 Linked issue

resolves nuxt/nuxt#14746, resolves nuxt/nuxt#13300

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This adds an override option to force override previous async data calls. With useFetch, we additionally use AbortController (if available in user's target) to cancel the fetch request. Either way, previous async data calls do not affect pending state or resolved data, and any promises returned by previous calls will await the new, overriding call.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

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