fix(setup): Setup provider using the `provider` key

[Tofandel]

🔗 Linked issue

Fixes #1414

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation or readme)
• [x] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Because the name is user provided and can (and should be different if we have multiple instances of one provider) then any name different than the provider name (eg: my-remote-ipx instead of ipx) will not setup the provider as expected

[Tofandel]

Drafting this for now as there is some weird things going on with ipx

if (typeof p.setup === "function" && p.name !== "ipx" && p.name !== "ipxStatic") {
        await p.setup(p, options, nuxt);
}

Because we can't use nitro so early

[danielroe]

would you be able to add an example of the usage you have in mind, perhaps by adding it to the test fixture? 🙏