[Feature Request] Add option to invert mouse selection behavior (native selection default, mouse capture with modifier)

Bug Description
There should be a way to invert selection, so native selection is enabled by default, and mouse capture enables with shift, rather than the inverse, as accidentally clicking options when switching focus, and missing copy to the secondary clipboard (middle click) rather than primary (ctrl-shift-c or ctrl-c) are really inconvenient, but I still want to be able to use the mouse capture features, just much less frequently.

Environment Info

• Platform: linux
• Terminal: konsole
• Version: 2.1.220
• Feedback ID: bc6d3e59-8662-4d4b-b350-5092001397c6