[ActionListItem] Make QML imports and tooltip consistent

Summary: T10862 and T10873

Test Plan: The tooltip now behaves correctly.

Reviewers: #plasma, #vdg, apol

Reviewed By: apol

Subscribers: apol, #vdg, plasma-devel, #plasma

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D21417