Feature summary (what you would like to be able to do and where):
In vector-2022 the sidebar languages box (telling users that this was moved) uses the generic class "mw-sidebar-action", please add an additional more specific class name here for this element so that it may be styled without being tied to future items that may use the generic class.

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
Some users want to hide this element, but have to use:

.mw-sidebar-action {
    display: none;
}

While this works, it appears to set up a future use problem, where that class name may apply to other "actions".

Benefits (why should this be implemented?):
Future-proof styling that should only apply to the languages box.