fix: handle zero touch coordinates

[ioannisj]

💡 Motivation and Context

Closes #254

The likely cause of zeroed-out coordinates is that we were accessing UITouch asynchronously. I was able to replicate locally by adding a conditional breakpoint checking for zero location. Every touch event that hit the breakpoint had its associated touch.view, touch.window and touch.gestureRecognizers erased.

I think the system may be releasing or erasing this info by the time we handle it, so I changed to collect the necessary info on main thread, and then process async. I kept a failsafe check before capturing in place just in case.

💚 How did you test it?

Locally with sample projects

📝 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]

nice finding.