writeZipPromise creates a broken archive when file names have non-ASCII characters

[maykivets]

The function "writeZipPromise" creates a broken archive when file names have non-ASCII characters.

Although the function "writeZip" works as expected.

Steps to reproduce:

1. Create a folder or zip archive.
2. Add a file with non-ASCII characters in its name, e.g. "my file копія.png".
3. Try to write a zip using the function "writeZipPromise".