[LMN-1700] Fix the keyboard dismisses automatically while typing in App Search Modal

[Evelyn-Tang]

https://skyscanner.atlassian.net/browse/LMN-1700

• We found that the scroll position of content of App Search Modal changes which results in the keyboard dismiss as unexpected.
• To resolve it, add extensions to CGFloat and CGPoint to compare the 2 points in a certain number of decimal places.

Before

2024-09-27.17.03.18.mov

After

2024-09-27.16.57.10.mov

• Check this if you have read and followed the contributing guidelines

Remember to include the following changes:

• README.md
• Tests
• Screenshotting code
• Adding a component? Remember to expose it in the main Backpack.h header file

If you are curious about how we review, please read through the code review guidelines

[frugoman]

I see the intention of the change. I think it's a bit hacky as picking the right number of digits seems a bit arbitrary.
That said, lets get this fix in until we find a more generic option in the future.