Fixes https://github.com/status-im/status-desktop/issues/16688
Since we use the local image server to show the community image, the URL never changes when we update the image, since it's served using a query string containing the community ID. eg: `https://Localhost:46739/communityDescriptionImages?communityID=0x03c5ece7da362d31199fb02d632f85fdf853af57d89c3204b4d1e90c6ec13bb23c&name=thumbnail`
Because of that, the clients cannot know if the image was updated, so they had to force update the image every time, which was inefficient.
We discovered this issue when I refactored the community client code in Desktop so that we only update the changed properties of a community instead of reseting the whole thing.
The solution I came up with in the PR is to add a `version` to the URL when we detect that the image changed. This let's the clients detect when the image was updated without having to do any extra logic.
The community cache that the image server was using was not intended to be used for that. It can be invalidated at any moment. Also, it did not contain changes made by admins (admin events).
Using this new approach, we pass functions from the community manager to the media server so that it can have access to the correct community description.
Jonathan Rainville
Andrey Bocharnikov