Correctly position item context menu

The item context menu in the library page is now correctly positioned at
the mouse cursor position.
12 jobs for 139-context-menu-in-library-page-is-wrongly-positioned in 19 minutes and 8 seconds (queued for 18 minutes and 38 seconds)
Status Job ID Name Coverage
  Images
manual #39026030
allowed to fail manual
build_image_fedora
manual #39026031
allowed to fail manual
build_image_fedora_system
manual #39026032
allowed to fail manual
build_image_ubuntu
manual #39026033
allowed to fail manual
build_image_win32
manual #39026034
allowed to fail manual
build_image_win64
 
  Build
passed #39026035
linux_builtin

00:05:28

passed #39026036
linux_system

00:03:45

passed #39026037
ubuntu_appimage

00:05:48

passed #39026038
win32_build

00:06:00

passed #39026039
win64_build

00:03:58

 
  Installer
passed #39026040
win32_installer

00:01:50

passed #39026041
win64_installer

00:01:47