pkp/pkp-lib#10090 Ensure anonymity in discussions for double blind reviews

[Hafsa-Naeem]

for pkp/pkp-lib#10090

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[Vitaliy-1]

Thanks, it works perfectly! I've just added a small comment regarding our coding conventions. Also, I recommend using the issue number for the branch name, e.g., i10090_anonymity_discussions - just to not get lost in branches when working simultaneously on many issues.

[Vitaliy-1]

We avoid usage of column names outside of a query builder. I see that UseCamelCasing doesn't convert when not calling the model directly. If it's impossible to avoid, we can just create a scope for a Model. Here we can just get the collection first and then call pluck on the collection, how it was implemented before.