Make the `Search all items` setting tool-tip readable

[Felanbird]

During a random conversation, I was linked an image showing of the current tool-tip for the Search all items setting, which is frankly unreadable.

So I went ahead and added some crispy HTML to actually wrap the text around to a readable state

I pointed this PR to the 3.6.0 branch, if you want to create a 3.6.1 branch and swap it to that, that's perfectly fine :+1:

before:


after:


[geheur]

added in f78375d42b1e28f41bbe64c826b53111755309fb