feat: Store user which has downloaded file in activity feed

[Koc]

Summary

I've added information about user which downloaded file via public link (if this user was logged in)

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)

[Koc]

@kesselb can you run pipeline for PR?

[Koc]

mates, seems like some test failures are unrelated to my changes. How can we fix them?

• performance: Errors during submodule fetch: 3rdparty
• cypress tests

[kesselb]

Ignore performance and cypress for now.

[Koc]

@kesselb all green 🟢, except performance and cypress

[artonge]

Rebased

[Koc]

@artonge so, let's merge then?

[artonge]

@Koc sure, I created a local copy of your PR here: #46533
This is to have the result of all the CI steps.

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