Remove symbolic icons in favor of standard icons
Summary:
This removes -symbolic icons in favor of theme-neutral standard icon names to ensure compatibility.
Follow-up to efaebe290f1b as discussed in D10770.
Before:
After:
Test Plan: Test Open Containing Folder and Trash menu options to ensure functionality.
Reviewers: Gwenview, rkflx, ngraham
Reviewed By: Gwenview, rkflx, ngraham
Subscribers: rkflx, ngraham
Tags: Gwenview
Differential Revision: https://phabricator.kde.org/D10843