fix(OpenAPI): Set rich object size parameter to integer

[provokateurin]

☑️ Resolves

spreed/lib/Chat/Parser/SystemMessage.php

Line 803 in 1e0bebf

'size' => $size,

is always the result of $node->getSize() and therefore an integer.

🛠️ API Checklist

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not possible
• 📘 API documentation in docs/ has been updated or is not required
• 🔖 Capability is added or not needed

[provokateurin]

Again, I don't know how important this fix is so please decide yourself if a backport is necessary.

[nickvergessen]

Im not sure. I think we should cast it to string. Because it is actually float or integer iirc.
And all parameters should be strings as per the definition 🙈
https://github.com/nextcloud/server/blob/master/lib/public/RichObjectStrings/Definitions.php#L337

[provokateurin]

I interpreted the example to be wrong and it should be an integer instead. I guess either way is possible, we just need to know how it was originally intended.
The other thing is the float type which I honestly don't understand. Is this a fix to avoid overflows on 32-bit systems by using double values?