Price struct integer overflow

[cuongph87]

What version are you using?

Version 22.0.0. But it shouldn't matter.

What did you do?

While the XDR definition specifies int32, the actual Stellar network allows for prices with numerators and denominators exceeding the int32 range. This causes parsing failures when attempting to process such transactions.

A real-world example can be found in this trade:
https://horizon.stellar.org/trades?cursor=237504432974213121-0&limit=1

What did you expect to see?

Larger values observed in the network should be handled properly.