e9bb58e6df
Reverts most of the additions fromae1dc8f5f9and68c6fc6d38to allow internally defined UI lists to set operators to execute on click and drag events. This was added and used only for the asset view UI template was removed for 5.0 in the previous commit, as part of #110461. Pull Request: https://projects.blender.org/blender/blender/pulls/140149