[Bugfix]: 'forbidden_chars' - the condition added for uploading via Drop or UploadPicker. #43495

[arublov]

• Resolves: #43423

Summary

1. Added the condition for uploading files via drop.
2. Added the forbiddenCharacters parameter for UploadPicker (need to merge this pull request).

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• [ ] Tests (unit, integration, api and/or acceptance) are included
• [ ] Screenshots before/after for front-end changes
• [ ] Documentation (manuals or wiki) has been updated or is not required
• [ ] Backports requested where applicable (ex: critical bugfixes)

[arublov]

@szaimen I apologize for the confusion I caused. I got a bit changed my environment, had to optimize it a bit, and as a result, it led to some spam. I'll try not to let this happen again in the future :)

Thanks for your help and comment.

[arublov]

Some comments about the codestyle (really not sure why ESLint does not complain?)

@susnux I fixed my code according to your comments. Thank you. Do I need to do something with ESLint? Maybe something on my side?