fix: safely convert floats to int

[ioannisj]

💡 Motivation and Context

Closes #293

💚 How did you test it?

let nanNumber = NSNumber(value: CGFloat.nan) // NaN
let frNumber = NSNumber(value: CGFloat(4.5)) // 4.1
let gfmNumber = NSNumber(value: CGFloat.greatestFiniteMagnitude) // 1.797693134862316E+308

nanNumber.intValue // 0
gfmNumber.intValue // Int.max (9,223,372,036,854,775,807)
frNumber.intValue // 4

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.

[marandaneto]

the unit tests could be part of the tests instead of the PR description :)

[ioannisj]

the unit tests could be part of the tests instead of the PR description :)

Yeap, done :)