chore: Activity screen refactoring & code decoupling

[olerichter00]

Follows up on #10988

Description

This is an attempt to refactor and decouple the Activity screen code to avoid bugs like the one fixed in #10988. I noticed that the artwork list component, which is used for many activity types, contains some type-specific elements and optimizations and tried to move them out of the component.

Before	After (iOS)	After (Android)
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PR Checklist

• I have tested my changes on iOS and Android.
• I hid my changes behind a feature flag, or they don't need one.
• I have included screenshots or videos, or I have not changed the UI.
• I have added tests, or my changes don't require any.
• I added an app state migration, or my changes do not require one.
• I have documented any follow-up work that this PR will require, or it does not require any.
• I have added a changelog entry below, or my changes do not require one.

To the reviewers 👀

• I would like at least one of the reviewers to run this PR on the simulator or device.

Changelog updates

Changelog updates

Cross-platform user-facing changes

iOS user-facing changes

Android user-facing changes

Dev changes

• Activity item screen code refactoring & decoupling (test setup: https://www.notion.so/artsy/Activity-Panel-cd0a9668895848a484b51bebb9723a8f?pvs=4#1faeb480c6d3432fa866718aa446ef5d) - ole

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[ArtsyOpenSource]

This PR contains the following changes:

• Dev changes (Activity item screen code refactoring & decoupling (test setup: https://www.notion.so/artsy/Activity-Panel-cd0a9668895848a484b51bebb9723a8f?pvs=4#1faeb480c6d3432fa866718aa446ef5d) - ole - olerichter00)

Generated by 🚫 dangerJS against 443729f

[MrSltun]

This looks good!

But I can see that there are changes in the rendered elements code, maybe we should test it and take screenshots before and after to make sure that this changes doesn't introduce a visual bug?

[olerichter00]

But I can see that there are changes in the rendered elements code, maybe we should test it and take screenshots before and after to make sure that this changes doesn't introduce a visual bug?

That's a very good idea 👍 I've tested the changes with all notification types but haven't taken screenshots. I'll add them to the PR.