[BUG] Paste is not in the context menu in "List View" mode

[BrodieRobertson]

Cosmic-files version:
Git Commit: d29baf1

Issue/Bug description:
When in "List View" mode there is no paste option in the context menu, when in "Grid View" mode there is. This forces users who do not use keybindings to go to different locations to use paste depending on the mode they're in. I assume this occurs because in "List View" you are unable to open a context menu unless it is on top of a file

Steps to reproduce:

1. Set Files to "List View"
2. Open context menu

Expected behavior:
Paste should be present in both modes

Other notes:
List View

Grid View

[l-const]

A common issue even with nautilus, here is a video from mii beta's youtube channel that explains the issue and potential solutions:
https://www.youtube.com/watch?v=anGTIMUl6TA . The underlying issue is that there is not enough space to get the other context-menu when something is not selected , for example options like New folder, New file & etc. There should be gaps so the right context-menu shows up and ideally it is easy for the user to found the gap between the list items/elements.

[l-const]

I managed to get the right context-menu by clicking on the gap between the content area and the sidebar, here a screenshot with the "Paste" option in the list view:

Edit: The available clickable space might become incredibly small in "compact" density mode.