userEvent.paste possibly casts string to a number

[jnous-5]

Reproduction example

https://codesandbox.io/s/happy-architecture-1crzb7?file=/src/App.test.js

Prerequisites

1. Go to Tests tab and run the test
2. Notice that the test fails due to mismatched paste value
3. If you check console log of App, the raw e.target.value equals to 0.8 (instead of .80)

Expected behavior

userEvent.paste should return .80.

Actual behavior

userEvent.paste returns 0.8 (was somehow cast to a number?).

User-event version

14.4.3

Environment

N/A. Can be reproduced in codesandbox.

Additional context

This used to work in v13+. Please see repro below.
https://codesandbox.io/s/hungry-wildflower-e5o25n?file=/src/App.test.js