remove icon dependencies

[ex37]

What issue are you having?

In my particular case, sl-menu-item is depending on 2 icons from default library - check-lg and chevron-right. The problem is, cause I am bundling shoelace myself, I can't find out upfront which icons are used for my bundled components. In fact, cause icons are loaded dynamically, I can't add hash to the filenames when using my bundler.

Describe the solution you'd like

There is some inconsistency currently, but some components are directly including there icons (even though they are also available in default library). The caret icon, in case of sl-button, for example. Generally I am happier with this behavior.

Describe alternatives you've considered

An alternative solution, maybeeee, would be importing icons with import statements, so that the bundler can better decide what to do, and we don't end up with duplicates.

[claviska]

All icons used internally must use the system icon library. This was an oversight, but has been corrected in 9e747e7.

[ex37]

thanks, doing same locally fixed my issue!