fix(types): exclude non serializable options from route rules

[pi0]

🔗 Linked issue

closes #977

❓ 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

We were wrongly typing non-supported cache options (nonserializable functions) for cache key in routeRules.

📝 Checklist

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

[pi0]

cc @danielroe if you know a smarter way to auto-exclude all non-pojos feel free to change it.

[danielroe]

Will push.

[William-WFC]

I find getKey still invalid in routeRules > cache, in nitro.config.js
here is my config

nitro: {
        devStorage: {
            'v_pc': {
                driver: 'redis',
                /* redis connector options */
                port: 6379, // Redis port
                host: 'localhost', // Redis host
                db: 0, // Defaults to 0
                maxRetriesPerRequest: 2,
            },
        },
        routeRules: {
            '/**': {
                cache: {
                    name: 'my_name',
                    swr: false,
                    maxAge: 6 * 60,
                    base: 'v_pc',
                    getKey: () => 'hhhiii',
                },
            },
        },
    },

I console.log in here (in route-rules.mjs file),

const config = useRuntimeConfig();
console.log('config.nitro.routeRules', config.nitro.routeRules)
const _routeRulesMatcher = toRouteMatcher(
  createRadixRouter({ routes: config.nitro.routeRules })
);

getKey is lost

config.nitro.routeRules {
  '/__nuxt_error': { cache: false },
  '/**': { cache: { name: 'my_name', swr: false, maxAge: 360, base: 'v_pc' } }
}

I guess this is a bug. getKey is lost In the process of delivery.