[electrophysiology_uploader] Minor unexpected behaviours

[jeffersoncasimir]

While testing the module, I noticed a few minor non-breaking issues, that I believe would constitute improvements to the module.

• After uploading a file, the Browse tab does not update, as it does in the Document Repository module.
• After pressing Submit with a file with a name that does not match the [PSCID]_[CandID]_[Visit Label]_bids.tar.gz convention, an error message appears below the field to state the issue. When the file is replaced with a file that does match the convention, the error message does not disappear, until Submit is pressed