Remove the current implementation to block paintings

[Garanas]

Description of the proposed changes

Removes the changes made in https://github.com/FAForever/fa/pull/6783. The current implementation in the chat is buggy. This removes noise on the line, where players are blocked from sharing but you're unable to see that as a player.

Testing done on the proposed changes

Launch a game with up to 4 players using the launch script made by Nomander, observe that the paintings work.

Additional context

This is of course not a great solution, but unfortunately refactoring the chat or its configuration dialog turned out to be very time consuming. We're easily talking about dozens of hours. I do not have the motivation to put in that time. Meanwhile, the current approach of blocking paintings does cause issues with players that do not see paintings at all, sometimes not even their own.

Checklist

• [x] Changes are annotated, including comments where useful
• [ ] Changes are documented in a changelog snippet according to the guidelines.
• [ ] Request 2-3 reviewers from the list of reviewers and their areas of knowledge.

Summary by CodeRabbit

• Documentation

  • Simplified chat filter label and tooltip to remove painting-related wording for clearer guidance.

• Changes

  • Painted brush strokes now render consistently in the game interface, regardless of prior per-author filtering.