For many selection variations we alter the operator's displayed name to
reflect this. For example "Select (Extend)", "Select (Deselect)", and
"Select (Toggle)". This PR does similar for VSE select modes, returning
"Select (Unconnected)", "Select (Linked Time)",
"Select (Linked Handle)", and "Select (Side of Frame)". These are shown
if you press Alt or Ctrl while hovering in the VSE Editor.
Pull Request: https://projects.blender.org/blender/blender/pulls/134195
bbe4bb38a0