[electrophysiology_browser] Fix French translations + typo (non-db only)

[HachemJ]

Brief summary of changes

This PR fixes the issue described in the corresponding issue report and corrects a minor UI typo by adding the missing trailing colon : to the 'Total events in recording' label.

Testing instructions (if applicable)

1. Testing is recommended for someone who already has the visualization component set up, ideally @lapadulamichael who reported the issue. The setup to access the visualization component of the module which contains most of the fixes is documented in the module's README.md, so anyone else assigned to the PR should be able to set it up without difficulty.

Link(s) to related issue(s)

• Resolves [electrophysiology_browser] Incorrect/missing translations #10661 (Reference the issue this fixes, if any.)

[lapadulamichael]

@HachemJ @driusan

I noticed all of these are also in English. I am not sure if we actually do want to translate all of these or keep them universally in English. If we do decide to translate all of them then there still are some trial_type that were missed. If not, then we should revert the change for the ones that were already done.

[HachemJ]

@jeffersoncasimir Dave recommended you since you are familiar with the module. Can you draw the line on what's need to be translated or not? Please check Michael's last comment. Thank you