fix: 849 support Symbol keys in provide/inject

[eriklumme1]

Closes: #849

As Object.entries(...) only lists string properties, and Vue supports provide/inject with Symbols as keys, all provisions are not picked up.

I opted for Reflect.ownKeys, as its a good choice per the MDN documentation:

Object.entries()

The Object.entries() static method returns an array of a given object's own enumerable string-keyed property key-value pairs.

Reflect.ownKeys()

The Reflect.ownKeys() static method returns an array of the target object's own property keys

Return Value
Array of the target object's own property keys, including strings and symbols. For most objects, the array will be in the order of:

I've modified the #732 example to add the symbols. Prior to my change, this is the output:

And with my changes it's this

[netlify]

✅ Deploy Preview for tresjs-docs ready!

Name	Link
🔨 Latest commit	e4be495
🔍 Latest deploy log	https://app.netlify.com/sites/tresjs-docs/deploys/66ffe07975dc4a0008f58952
😎 Deploy Preview	https://deploy-preview-850--tresjs-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[alvarosabu]

@eriklumme1 thanks a lot for raising this and providing a working solution. You are awesome

[eriklumme1]

@alvarosabu thanks a lot for getting this in!